BigDave - 3:46 pm on Aug 5, 2006 (gmt 0)

Google can, and often will, follow anything that it even suspects is an URL on a webpage. That includes anything in the text, in comments and in the JS.

That does not mean that all those URLs will get full credit as a link. They won't. Google just uses that information to try and find new pages. The href= is the part that will get all the credit, including the PR and the link text.