Chef2Chef.com offers a listing of wines where you can vote in your favorite. I don't exactly know how scientific this is as it seems to be automated. All you have to do is click on the wine listed that you want to vote for, a window pops up where you rank it from worst to best, and then your vote is included in the total a few minutes later. All wines are under $50.

If you want to nominate a wine (or website or many of the other culinary-related items they rank), you need to register. Registration is free, and once register you get access to lots of other areas on the site such as forums, event calendar, and weblogs.

I clicked around, and I while it looks like a great deal of information is available on this site - and of course it is fun to cast my vote - I generally found the site a little tedious to navigate. However, if you are in the culinary industry, it's probably worth a look.