I wanted to let y'all know about a service I created that's being used
by some ultimate teams up here in Seattle to coordinate pick-up games,
practices, and post-game BBQs. It's called Swaggle and the web site is:

http://swaggle.mobi/

It's a group text messaging service I've built and hope the ultimate
community can get some good use out of. Once you've created a group,
you can send a message to it and everyone in the group will receive a
text message on their phone. If they reply, that goes to everyone in
the group, as well.

Great for coordinating a team, since you can send messages that would
arrive too late as e-mail (e.g., "field is closed, we're moving to XYZ
instead", "running 20 min. late, don't forfeit!", "need a ride, can
someone pick me up?") or figuring out pick-up ("spontaneous pick-up at
XYZ park. Come now"). Sort of like Twitter/Dodgeball, except easier to
talk to a specific group of people.

Give it a shot at http://swaggle.mobi/ and let me know what you think.
It's free, I won't sell your number to anyone, you won't get spammed,
and you don't need to install any software or have any special phone
to use it, just regular text messaging.