One too many online profiles?

I just created another online profile on "Myspace.com" and with that I now have three online profiles. If I count this site, which has a profile on it, you can say I have total of four online personals. I'm now wondering if there is a thing as having one too many online profiles and is there any advantage to having a LOT of online profiles. I've noticed that most of the same people are on all these sites and I wonder if he/she is gettting more responses from one site as opposed to the ohter. Also, does that mean John Doe from "Friendster.com", who doesn't respond to my friendster profile, will respond to my "Myspace.com" personal instead. I somehow doubt it. I'm thinking having all these online profiles is just a trendy thing to do and it's a way for people to feel part of something greater. I remember a year or two ago, when "Friendster.com" was the cool thing to have as was "livejournal", but now it seems as if they're a thing of the past. Anyway, I've jumped the bandwagon and created a profile on "Myspace.com" to be in the know and we'll see what becomes of it. I can't really say I did it to meet new people, since I'm sorta kinda dating "J", but I will admit having this online profile makes good back up if things fizzle out between he and I. Hopefully that will not be the case, but with how my luck has been with guys and dating you can never truly know : (