What AM I doing wrong?

I just don't get these guys. I know guys think way differently then women. we are emotional and they are logical.. blah blah blah! Here is my issue.. I am on POF
(Plenty of Fish) & their "long term" site EVOW. Both are free sites, but no one makes these guys message me. But Like just this last two weeks, I changed my profile a little bit and changed my location to where i will be moving to in a few months. I figured i could talk to a few guys in that area and then i would have a better idea of who i will want to meet when i move down there. So i was talking to 5 guys. THEY ALL MESSAGED ME, i did not message them first, so there i figure they wanted to get to know me. So we messaged and i told them i am on yahoo messenger and we could talk easier on there. And they came and we would chat for a day or 2, and this is where it gets confusing.........they just QUIT TALKING to me. I don't even know what i said or typed or anything, they just quit. This has happened to me quite a lot since I left my husband in July 2010. others will talk until they meet me then quit talking cause they don't like bigger girls i guess, but its not like i don't tell them, they all know from the start that i am a bbw and if they don't like that then fine., but i don't want anyone telling me i lead them on or anything like that. I dont tell them I a talking to more then one guy, we talk about normal 'just starting to talk' things. nothing super in depth. Whatever they ask i answer, but then they only sometimes answer back. I wonder if it is just me, and maybe I just want them to be as interested in getting to know me as i am in getting to know them. Is it because I don't have a life and they probably do that it takes days for these guys to respond back? 2 guys seemed like they clicked with me.. we were wanting the same things from a relationship, but now its been 4 days since we chatted, i just don't know what I am doing wrong! Its so frustrating!