I am now Plurking at Plurk, it’s a purdy, Twitter type, Web 2.0, chat to people, type thing which you will get bored with after a few months.
If you ask, what’s the point. Then the answer would be very little. However, if you get why increasing the number of your connections is of benefit to you then come join. It does things differently and this effects the conversation, giving it a different edge.
But, if online, social networking is not necessary to your core business, don’t bother. It’s really just for the uber geeks and only a few of those will actually get it to work for them, rather than working for it.