redmisoplz | Social Networking Deets

Hi friends! Since I now have quite a bit of time on my hands, I'd like to ask what chat programs/social networking sites you use to keep in touch with friends. I have Skype and Yahoo messenger, and I think I even have Babblr for Tumblr. But are there other things you use? If so, please leave me a comment with your details and I'll add you! The comments will be screened so your usernames and such won't be available to just anyone.
Thanks!! :D