A new concept. I though it would be a good idea to have a character as the logo. It brings charism and has to do with the social aspect of the website. I hope you like it. Thanks!
M enlarged as you suggested, and now with buttons. Added some reflex for extra coolness and also changed font so the overall balance is better now. I'll post a variaton without the dot over the M. And about the slogan, just a suggestion :-)