Usually facebook. :O) I actually love it. I love to be able to share all my pictures and thoughts with friends and family. I twitter occasionally but not to often. Of course I make some phone calls as well. And well of course cafemom :O) I have made some amazing friends here that I consider part of my inner circle we talk almost daily.
My social circle is all kid related...We get to hang out as long as we can think of something to keep our kids occupied. We always are together for cookouts, holidays, birthday parties and try keep in touch thru phone calls. We also text A LOT!