Do you use any of the social softwares?

just wonder how many of you out there (who read this blog) use some kind of social software?
I don't mean friendster, multiply and such. I notice there are more and more web 2.0 software out there, and people started telling everybody what they are doing, using, buying and so on. For example, twitter and jaiku are two of the web services i know which uses "micro blogging" concepts. You can update others what you are doing exactly at this moment. BLogs and photo sharing sites (flickr.com and such) are already like norm today. So i am not talking about them at all. IM is going to another level, such as inter-connectable and can be used to extend its feature (like GTalk to Twitter, simple but useful).

do tell me via any channel you know, or leave message here if you have any idea. oh yeah, even if you insist Email can be social, i won't mind taking it in as part of the answer i need. it is p2p in nature, just in case if you do not know :) 


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