...you can pop over to TrueDater.com and find out whether your prospective date is anything close to what the profile suggests.Luckily, I've been together with the Unknown Wife for almost 15 years, so I don't have to deal with stuff like this. That's why, in relationship, I'm a firm believer in a "long-term buy and hold" strategy" (I did my asset selection, paid my price, and I plan on keeping my portfolio just where it is). In fact, when I get nostalgic for my single days, it's usually because I forget that they weren't all that great. Without going into too much detail, let's just say that there was a lot of search costs and adverse selection going on...
TrueDater, not to be confused with True.com, is a database of reviews written by people who met through online personals. It's like Amazon.com, only instead of books, you're reviewing people. More specifically, you are reviewing their ability to represent themselves online.
Addendum: Here is a sample review.
Information Asymmetry and Dating
The gang at Marginal Revolution has a category of posts they title "Markets in Everything" (warning: their taste in examples sometimes is a bit "out there", so be warned). Here's the latest: