Forum Moderators: rogerd
You must use nofollow if you don't do any kind of link exchange.
Uh-hum, that's not true.
Why would you add those to the bottom of all your pages? Why not create a single page listing them all and then link to that page if you want access from all of your pages. Don't bleed the PR from every page, just one. ;)
And forget about the nofollow unless you have an area where unmoderated UGC (User Generated Content) is present.
If you go to Google's Blog [googleblog.blogspot.com], there's a perfectly rational explanation of what it is and why, which makes perfect sense to me.
It's not about page rank (and any value there is going to be very marginal, if any).
It's simply about the difference between recommended links (which Google sees as links you choose to make), and non-recommended' links (which Google sees as links that may have been placed by third parties, eg on social pages, guestbooks, blogs and forums, and may be recommended by the person who placed them, but not necessarily by the site owner).
I've found it very helpful, and never felt in any way threatened by it.
I'm also utterly convinced that Google has factored into their algo in some way, and I never forget that nofollow was the first major initiative agreed upon by all the major SEs.
BTW, That doesn't mean 150 "Top SEs" that someone will submit your sites to, it means all of the top three ;)
<a href="http://www.example.com/profileusername" rel="me">my profile on example.com</a>
[edited by: engine at 11:01 am (utc) on Jan. 3, 2009]
[edit reason] TOS [/edit]