How often does Google crawls old pages, is it worth to get links from them ?

[pqdbr]

Let's say there's a blog post in my industry niche that's 2 years old. Is it worth to get a link from that blog post ? How do I know Google will actually re-crawl that page, and how long can that process take ?

[RobertFisher]

pqdbr

Based on the recent White Board Friday by Cyrus Shepard and Tim Grice's SEO WIZ post, I would say it is near worthless.

To some degree, for me it is counter-intuitive. But, I have to believe with QDF, etc. that a link from new content is better than an equivalent link from old content. When you speak of an old blog post (two years old), unless there is something happening with it recently I would move on to greener pastures.

[pqdbr]

Your answer was excellent, but let's increment the discussion: what if the article is from 2-3 months old ? Is it "as worthless" link as a 2-years old blog post ?

[RobertFisher]

I would think it would depend on the age of the article and whether or not people were actively linking to that. So even the old article, if all of a sudden people started linking to it (like a bio for a actor when there is suddenly news about him) it would become relevant again and likely good. If it is only a couple of months old, I think it would be more worthwhile than something that is 2 years old.