200個搜尋引擎演算參數-做SEO網站排名該了解的行前功課-200 Parameters of the google algorithm

Ann Smarty是一位知名的SEO Consult,她把搜尋引擎幾百個重要的演算參數做了列表，詳細的資訊也可以到seomoz.org逛逛，對於已從事SEO或網路行銷的朋友可以有所了解，而對於準備網路創業及網頁設計優化或不知網站搜尋引擎排名到底怎麼排(演算結果)的網友們，可以利用下列的分類，來幫助你在思考網路行銷計劃時的貼心memo。

SEOMOZ同時也提供了前5名對搜尋演算結果較為重要的參數
Top 5 Ranking Factors
1.Keyword Focused Anchor Text from External Links
73% very high importance
這是做SEO最為關鍵的因素之一，沒有關鍵字的Backlink，搜尋引擎無法了解你的網站到底要歸類在什麼領堿來排名。

2.External Link Popularity (quantity/quality of external links)
71% very high importance
外鏈的數量及品質，想跟人交換連結的朋友，建議不要使用交換流量網站給的程式碼，除非你有特定目的。

3.Diversity of Link Sources (links from many unique root domains)
67% very high importance
連結來源的種類，也就是使用SEO的技法有多少種類，方法越多，容易使搜尋排名有較好的結果。

4.Keyword Use Anywhere in the Title Tag
66% very high importance
用在抬頭Title Tag的關鍵字最好自然些，就目前來看台灣搜尋引擎的結果，顯然這個權重在台灣的搜尋行銷市場有一點bulls**t。

5.Trustworthiness of the Domain Based on Link Distance from Trusted Domains (e.g. TrustRank, Domain mozTrust, etc.)
66% very high importance
網站的信任指數，也就是要spammer多注意的事，做white hat則不用擔心這點。

下列則是完整的演算參數，提供給網友們參考：
Domain: 13 factors – 網址url的考量
．Domain age;
．Length of domain registration;
．Domain registration information hidden/anonymous;
．Site top level domain (geographical focus, e.g. com versus co.uk);
．Site top level domain (e.g. .com versus .info);
．Sub domain or root domain?
．Domain past records (how often it changed IP);
．Domain past owners (how often the owner was changed)
．Keywords in the domain;
．Domain IP;
．Domain IP neighbors;
．Domain external mentions (non-linked)
．Geo-targeting settings in Google Webmaster Tools

Server-side: 2 factors – 主機空間的考量
．Server geographical location;
．Server reliability / uptime

Architecture: 8 factors – 網站的基本結構
．URL structure;
．HTML structure;
．Semantic structure;
．Use of external CSS / JS files;
．Website structure accessibility (use of inaccessible navigation, JavaScript, etc);
．Use of canonical URLs;
．“Correct” HTML code (?);
．Cookies usage;

Content: 14 factors – 網站內容與文案的優化使用
．Content language
．Content uniqueness;
．Amount of content (text versus HTML);
．Unlinked content density (links versus text);
．Pure text content ratio (without links, images, code, etc)
．Content topicality / timeliness (for seasonal searches for example);
．Semantic information (phrase-based indexing and co-occurring phrase indicators)
．Content flag for general category (transactional, informational, navigational)
．Content / market niche
．Flagged keywords usage (gambling, dating vocabulary)
．Text in images (?)
．Malicious content (possibly added by hackers);
．Rampant mis-spelling of words, bad grammar, and 10,000 word screeds without punctuation;
．Use of absolutely unique /new phrases.

Internal Cross Linking: 5 factors – 站內連結的相關度
．# of internal links to page;
．# of internal links to page with identical / targeted anchor text;
．# of internal links to page from content (instead of navigation bar, breadcrumbs, etc);
．# of links using “nofollow” attribute; (?)
．Internal link density,

Website factors: 7 factors – 網站基本設定參數
．Website Robots.txt file content
．Overall site update frequency;
．Overall site size (number of pages);
．Age of the site since it was first discovered by Google
．XML Sitemap;
．On-page trust flags (Contact info ( for local search even more important), Privacy policy, TOS, and similar);
．Website type (e.g. blog instead of informational sites in top 10)

Page-specific factors: 9 factors – 網頁優化考量
．Page meta Robots tags;
．Page age;
．Page freshness (Frequency of edits and
．% of page effected (changed) by page edits);
．Content duplication with other pages of the site (internal duplicate content);
．Page content reading level; (?)
．Page load time (many factors in here);
．Page type (About-us page versus main content page);
．Page internal popularity (how many internal links it has);
．Page external popularity (how many external links it has relevant to other pages of this site);

Keywords usage and keyword prominence: 13 factors – 關鍵字使用方法
．Keywords in the title of a page;
．Keywords in the beginning of page title;
．Keywords in Alt tags;
．Keywords in anchor text of internal links (internal anchor text);
．Keywords in anchor text of outbound links (?);
．Keywords in bold and italic text (?);
．Keywords in the beginning of the body text;
．Keywords in body text;
．Keyword synonyms relating to theme of page/site;
．Keywords in filenames;
．Keywords in URL;
．No “Randomness on purpose” (placing “keyword” in the domain, “keyword” in the filename, “keyword” starting the ．first word of the title, “keyword” in the first word of the first line of the description and keyword tag…)
．The use (abuse) of keywords utilized in HTML comment tags

Outbound links: 8 factors – 外部連結的權重
．Number of outbound links (per domain);
．Number of outbound links (per page);
．Quality of pages the site links in;
．Links to bad neighborhoods;
．Relevancy of outbound links;
．Links to 404 and other error pages.
．Links to SEO agencies from clients site
．Hot-linked images

Backlink profile: 21 factors – 進行背鏈(Backlink)的考慮因素
．Relevancy of sites linking in;
．Relevancy of pages linking in;
．Quality of sites linking in;
．Quality of web page linking in;
．Backlinks within network of sites;
．Co-citations (which sites have similar backlink sources);
．Link profile diversity:
．Anchor text diversity;
．Different IP addresses of linking sites,
．Geographical diversity,
．Different TLDs,
．Topical diversity,
．Different types of linking sites (logs, directories, etc);
．Diversity of link placements
．Authority Link (CNN, BBC, etc) Per Inbound Link
．Backlinks from bad neighborhoods (absence / presence of backlinks from flagged sites)
．Reciprocal links ratio (relevant to the overall backlink profile);
．Social media links ratio (links from social media sites versus overall backlink profile);
．Backlinks trends and patterns (like sudden spikes or drops of backlink number)
．Citations in Wikipedia and Dmoz;
．Backlink profile historical records (ever caught for link buying/selling, etc);
．Backlinks from social bookmarking sites.

Each Separate Backlink: 6 factors – 背鏈(backlink)目標
．Authority of TLD (.com versus .gov)
．Authority of a domain linking in
．Authority of a page linking in
．Location of a link (footer, navigation, body text)
．Anchor text of a link (and Alt tag of images linking)
．Title attribute of a link (?)

Visitor Profile and Behavior: 6 factors – 參訪者(網友)的行為模式
．Number of visits;
．Visitors’ demographics;
．Bounce rate;
．Visitors’ browsing habits (which other sites they tend to visit)
．Visiting trends and patterns (like sudden spiked in incoming traffic)
．How often the listing is clicked within the SERPs (relevant to other listings)

Penalties, Filters and Manipulation: 12 factors – 搜尋引擎懲罰性參考指標
．Keyword over usage / Keyword stuffing;
．Link buying flag;(買網站連結的警告)
．Link selling flag;(賣連結也會警告)
．Spamming records (comment, forums, other link spam);
．Cloaking;(這個技術不要常玩，除非很懂)
．Hidden Text;
．Duplicate Content (external duplication)
．History of past penalties for this domain
．History of past penalties for this owner
．History of past penalties for other properties of this owner (?)
．Past hackers’ attacks records
．301 flags: double re-directs/re-direct loops, or re-directs ending in 404 error

More Factors (6):其他
．Domain registration with Google Webmaster Tools;
．Domain presence in Google News;
．Domain presence in Google Blog Search;
．Use of the domain in Google AdWords;
．Use of the domain in Google Analytics;
．Business name / brand name external mentions.

參考來源：
http://annsmarty.com/
http://www.seomoz.org/article/search-ranking-factors

結論：
能看到這兒的朋友們就表示你們有在用功啦^^，只要你想在網路上有所作為，以上由Annsmarty歸類好的資料一定對你們有所幫助的，由於本站在網路行銷議題上較定位成「熟悉網路」的族群所為文發表，未來將針對每種SEO策略及網路行銷的資源使用提供一點新的力量，本站不做「淺談」、「初探」這類行銷文章，一切依實用致上做為網路行銷知識定位。
期待您的共享！！

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