Anyone know what this site does other than collect email addresses? :-)

Apparently my email isn't valid. Looks like they won't get my email and I won't find out what this service is. Oh well.

Ugh, I wish programmers would quit trying to re-invent the email regex. While I'm usually a big fan of reinventing the wheel, this is a complex problem that has already been solved, and the solution can be found in just a minute or two on Google.

Speaking of Google, accepting [email protected] is a sign of the true faith.

(Curiously, while most sites object, folks from Tirerack to VMware accept it but then occasionally URL-decode the + as a space, wreaking all manner of unforeseen havoc.)

It is my fervent hope that the only service I receive for signing up is being in the "in" crowd instead of the "out" crowd.

I bet the whole "experiment" is a way to see if people will be willing to join this sort of beta

How about: every member has at least 2 invites? For any collaborative software that is actually worth a damn, this sort of model makes sense.

Your keys are reusable so.. you can give them to friends/fam

When people talk about the value of word of mouth as advertising it's always of the form: if M people each tell N of their friends, and those people each tell N of THEIR friends, and those people ... Wouldn't the most natural way to implement such a system be via invites?

Or, to borrow a page from advice for writers: show, don't tell.

See you in 4 weeks.