plentyoffish personals

Which is the better dating site? Yahoo Personals or plentyoffish?

Does anyone know of any free dating or personals websites besides plentyoffish.com or okcupid?

I've got a profile on Yahoo! Personals and Plentyoffish and every single time I email a girl whose profile is in my criteria, they either NEVER respond, my email gets deleted, or I may even get a b*itch message in return. WHAT GIVES? I don't understand. I'm a nice, fun, intelligent, and romantic guy with goals in life, I don't look that bad, my profiles are described pretty good, and on Yahoo, whenever I send icebreakers, sometimes, I'll get a positive response. But with emails, it's NEVER!!! I mean...I don't type anything obnoxious, which lots of guys do...but I need some help here and from the women, what should I type that would make you respond positively? Even if our interests are common, still, I get resisted. I'm getting closer to giving up online dating and all the dates I've gone on, here in AZ, have been from girls I've met online...

Every site I go to SAYS they are free but then there's a catch, you need a credit card or some other form of payment to become a full silver or gold member. I'm tired of seaching all over the net and joining a site only to find out it's not really free. Someone HELP ME PLEASE! I am a member of PlentyofFish.com but I haven't had any possitive results. I want a new site. So if anyone has any ideas, suggestions or knows of such a site please tell me. THANKS :)