Are aware about link popularity

Hi there,

Are aware about link popularity?

What tools do you use to find out the popularity of any site?
How would you rate Google toolbar, Alexa rating, Netcraft toolbar?

I do use Google toolbar basically just for the PR purpose and also for Googling but not much besides it.
As for Alexa rating it can be sometimes misleading also because there are several ways in which you can get the graph of the traffic up for a specific period of days but I still use it for checking out high traffic sites.

Depend on Search engine you are interested in.

Aside from our own toolbar, I also use google