I'm playing with a LinkedIn.com account. Similar to Orkut/Friendster/etc. but for business networking only. Looks significantly more sophisticated than Orkut or Friendster -- many more business/professional aspects to search by. Looks like it could be actually useful for drumming up business/contracts/employment.
Anyone want an invite? If so, I need your name and e-mail address. Use the comments or e-mail/IM me (or any other way you can come up with for getting the info to me).
Update: That's name and e-mail address.