Ping.fm is a new service that lets you update a bunch of social network/messaging sites all at once. Instead of logging into Twitter, Pownce, Jaiku, Facebook, and Tumblr and manually posting updates, you can just visit Ping.fm and write a single message which will be sent to each site. So far, it sounds a lot like HelloTXT, right? Well, it is, but Ping.fm has a few features that make it a lot more useful than HelloTXT.

First of all, you can post updates via email. When you sign up for a Ping.fm account you'll be assigned an email address. Just send a message to that address and the message will show up on all of your linked accounts. You can also enable an IM update option. Right now you need to have an AOL Instant Messenger account to use the IM posting option. But you don't have to use the official AIM client. As you can see in our screenshot, Pidgin works just as well, as should Adium, Trillian, Meebo or Digsby.

Ping.fm is still in private beta, but we've got 100 invites to giveaway. Just enter the code dls on the signup page.

[via Mashable]