Tag: backlinks

Relationship Between PageRank And Number Of Backlinks

On the forums or by email I am often asked the following sort of question: “How many Backlinks do I need to get in order to have PR5?”. The answer is simple and always the same one: “This question cannot be answered because the PR doesn’t only depend on the number of backlinks, it also and above all depends on the PR of each of those links…” Or to put it differently, a page can have PR5 with a single backlink whereas another one can have 3,000 backlinks and PR5 too.

Are Backlinks The Most Important Factor In Google Rankings? Depends On Who You Ask

How do search engines evaluate relevancy when ranking search results? Do they concentrate on optimized content, or do they value contextual backlinks more? Do they place more importance for on page content (optimized web copy)? Or do they emphasize off page, anchored links pointing to the site in question?

Backlinks (http_referrers)

When a web page is accessed by a link from some other page, the address of the other page (the “referring page”) is made available to the web server. We can pick that information up from logs or as the page is being displayed. For example, if we have Server Side Includes or php, we can pickup the referring page from an environment variable. Here’s a snippet of Perl code that does that:
$frompage=$ENV{HTTP_REFERER};
$thispage=$ENV{REQUEST_URI};

Yes, there’s a missing R in HTTP_REFERER. Yes, that’s wrong, but that’s what the variable is so that’s what you use.

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