Chemistry.com

Chemistry.com, a spin-off from Match.com, models its in-depth compatibility matching style after eHarmony.com (*est. $60 per month). However, reviews say that Chemistry.com is less expensive and promotes a less restrictive "come as you are" membership policy. Chemistry.com starts with a detailed personality test to find out who you are and what you hope to find in a partner. You can't search the site -- you must wait for the site to send you matches. Your first five matches are free, but you must subscribe to contact people. When you find a match, Chemistry.com guides you through a multi-step communication process. Some users report that matches don't always meet their criteria or turn out to be inactive profiles from Match.com. If you would prefer a free dating service that includes a personality test, reviewers recommend OkCupid.com.

VillageMatchmaker.com provides evaluations and recommendations of dating websites. CupidOnlineDating.com and TopTenReviews.com both offer comparison charts for getting quick, at-a-glance information. About.com's dating guide Bonny Albo does a good job of discussing Chemistry.com's features, but doesn't offer a comprehensive evaluation.