An interesting feature that works surprisingly well is the interests portion of one's profile; when you sign up, you're asked to make a comma-delineated list of the things that you enjoy.
Whether you list one item or many, every person that shows up in your search results later will then have your common interests listed below their profile.
OK, we’re calling BS on the lovey-dovey commercials that pop up for dating services like
Sure, there might be a minuscule amount of people who find love on the site, but we have a feeling what’s going on out there is much, much different—and our own adventures in online dating can speak to that. Match with singles and/or couples, and choose from more than 20 sexualities in your profile.
Just make sure that you change the automatically filled-in details before you search the first time, or else you'll get a huge list of 18-30 year old women within 1000 miles of your own zip code - as I did the first time.