Gmail Invitations - join
Gmail Invitations is a Google Group solely dedicated for requesting and giving out Gmail invitations. Since Google has recently given many Gmail users a fresh batch of invites I have made this group. You may request and give out invites on this group. -- Lee (lee.gibbs@gmail.com)(Moderator)
Low activity, 1248 members

GGroups - join
GGroups - Google Groups - How to create, grow, and manage an email community at Google Groups. Tips you need to know before you create your Google Group. Helpful hints on group description, categorization, and position in Google search positioning. Post in, post out. :)
Low activity, 155 members

Gmail-Invites - join
Ask or give a Gmail / Google Mail invite in this group (no longer needed to sign up with Gmail as of February 14th, 2007). More info about Gmail / Google Mail: http://gmail.google.com/mail/help/about.html http://mail.google.com/mail/help/intl/en-GB/about.html Group owner: Tomi Häsä.
Low activity, 8066 members, moderated