With the surge of social networking and personal ads, it is no surprise that recently, some unusual online dating sites have begun popping up. If eHarmony and Match.com are too bland for your taste, check out these dating sites that are sure to satisfy any strange dating requests you may have.

1. TilDeathdouspart.com: Online dating for terminally ill people.

2. WomenBehindBars.com: Snail mail correspondence with locked up ladies.

3. TrekPassions.com: Dating for Star Trek fans.

4. 420Dating.com: Dating site for marijuana smokers.

5. Geek2Geek.com: Online dating for geeks.

6. PositiveSingles.com: Online dating for people with STDs.