It was mentioned a couple of days ago about Gmail increasing available invites dramatically after there being a shortage of late. Today I just noticed that they've moved the invites box again and that I've got 50 invites compared to the five I'd had for a while.
If anyone wants one, I'm sure I've got more than plenty to go around (especially more than I get visitors no doubt). You can either just send me an email via the contact page, filling in the email you want sending the invite to and simply marking it "Gmail" plus any other comments (if you feel so inclined). Or, this'd be a nice test of the comments section... I hope nothing goes wrong!