[Update 17 Sep 2005 1151 IST]: I am stopping the invitation request comment page from now due to the fact that the main reason Google introduced invite-only was to fight spam and more over by this time most of the people would be having a gmail id anyway :). Thanks for the support, have a great day.
Ok, after inviting all friends personally now I have a lot of invitations on my account. Anybody in need of a gmail invitation leave a message as feedback with your email id (email id where the invitation has to be sent). Have a nice day.
Update on 23 Apr 2005:
Tip: When leaving your email do use the non-spam format like myname (at) mydomain.com in order to escape from email hunting bots.