Top Networking websites

Hi guys,
I'm new here, as you'd expect.

I've started profiles in various networking sites. Just curious to find out if there's any other networking sites i should target, before i set myself up (groups/fan pages/adding people)

So far ive

blogger
spout,
netlog,
buzznet,

photobucket

flickster
xanga,
hi5
myspace,
piczo,
diigo,
friendster,
twitter,
you tube,
tagged,
ning,
linkedin

I've read a few things on this forum, but one thing isnt clear. Is it possible to update, all the above sites using one program? I'm sure its not possible...but i'd thought i'd ask.

no, is not possible unfortunately

wow u want to target all?? its not possible....just select one or two and put all ur effort in them to get some good result otherwise nothing will work