does anyone know who has the best free" back link checker? I herd of a few but they lack real time sources.

Yahoo and MSN.
And another one.
http://www.webuildpages.com/tools/default.htm

i tried few of them before this. i think iwebtool.com have few that will find interesting at.

We have a free back link checker on our site at Creative Web Design

Some other handy tools as well

I use www.seologs.com

Use them for alot of things.

there's a great plugin for firefox that lets you do it with the click of a button. lets you check google/yahoo/msn

I think it may be called SEOpen but not sure look it up in Google.

I would prefer iwebtool. It gives a clear picture of Google BL's.