Thanks for your interest! And our apologies for the delay in sending out invites.

For us, it's actually really important to let people in slowly. A new user signup is the most expensive event for our infrastructure by a huge margin, since we do lots of queries to Twitter and lots of additional number-crunching behind the scenes. A big, sudden burst of signups, especially if it included several big Twitter celebrities, would result in a bad experience for everyone. We've been getting a very healthy number of signups so far, but we will try to invite everyone in within the next couple weeks.

Thanks for the reply. I understand the need to index and pre-process the data, but 'within the next couple weeks' is good to know, vs a vague 'soon'. I look forward to it.