Does anyone know of any websites that would let me check my link popularity / the number of backlinks that I have? The more details and specifics, the better?

Personally, I use the commercial stats tool Urchin, but I have also used sites like http://www.webmaster-toolkit.com/link-popularity-checker.shtml
Not a lot of details, but they check the top search engines and list the number of backlinks.

But again, you may want to use a site stats tool. Most hosting companies provide this within the control panel of youe website.

Oooooh! Link Harvester is nice :)

Sorry, didn't see the link !

Hi cscgal.

I use marketleap.com. It's quick and easy and you can check up to five sites at a time and it returns results for all the major search engines. It will also give you the page saturation for your sites for all the major engines.