Dating, Part Deux?

Ok, so since I last blogged about dating, one of the ads that showed up on the bottom of my site read:

plentyoffish.com

We delete members unfit to date!

Now, praytell, what makes one 'unfit to date'?  Don't get me wrong, I know what makes one unfit to date (controlling, still in love with an ex, commitment phobic, selfish, sadistic, immature, stop me before I go on forever).   

Now, someone with more experience than me feel free to correct me if I'm wrong, I don't have any experience with dating sites (and I'm not saying this to try to sound cool) - but is there anything one could say about oneself in a self-created dating profile that would indicate one is 'undateable'?   What, in their book, red-flags someone?  I can only assume one wouldn't describe oneself as immature, selfish, etc. 

I guess what amuses me most - maybe this site is trying to publicize itself as having a high quality of people on it - however, I do think this campaign might hurt it a little.   I think some people who have turned to online dating like not having a to deal with facing rejection.  Or, at least the sting of rejection is somewhat subdued seeing that it happens in cyberspace.  

I would think one who seriously fears rejection would be afraid of trying said site.   How bad would it feel to be rejected by a dating site?   It's not that one person doesn't want to date you, the entire dating community doesn't want to have you!

Conversely - I think the commercials for the chemistry.com website, which spoke about how they don't reject anyone but eharmony sent these seemingly normal, attractive, successful people "Dear John" letters, really hit the nail on the head for those who fear rejection.   I guess though, sites like these that don't reject anyone can boast they are carrying any and every weirdo out there.  

Thoughts?