Sing, o muse, of the wrath of Achilles...
You can compare ratings by going to the "My Geek" tab (near the top of the page) and selecting "Geekbuddies". Next go to the "ratings" link and you can then narrow your search/comparisons from there.
I think the OP is looking to FIND geek buddies. Shikosaki, doesn't your recommendation here only let you compare your ratings to your geek buddy's ratings? This is new to me and I want to make sure I understand.