What factors does google use when determining page raking?

Question

Would it be easy to go from rank 6 to 7?

Answer 1

Page rank is most likely logarithmic.

No incomming links are needed for a rank of one.
A few for a PR2, PR3.
Up to 100 for PR4.
Thousands for PR6
Ten THousands for PR7
etc.

But quality of incoming PR links make some links more valuable than others.


A lot is built into moving in the rankings, and noone knows them all.

But here is a list of what I think:

Number of incoming links.
The Google PageRank of those incoming links.
The number of quality links leaving.
Presence of Search Term in Text, h1, h2, h3, h4, alt, tags.
The presence of Search Term in domain name.
The presence of Search Term in file name.
The number of years the domain name is registered for.
The number of years the domain name has been registered.
Top level (.edu is given a higher quality than .com)
The presence of important related terms nearby the Search Term in the text.
The lack of appearance of links on low-ranked pages.
Presence in the Open Source Directory (dmoz.org).
Presence in the Yahoo! directory.
Presnce of Search Term and related terms in Titles of page and through the site.
Quality of the HTML (XHTML1.0 sites do better than the HTML soup produced by many WYSIWYG editors.).
Link to a validator (like the one at http://www.w3.org).
Intelligibility of the text and site.

I have also noticed that search terms longer than three words are not indexed in the same way as those shorter than four words.