GMail seem to be giving out invites left, right and centre. It seems like they're in their final stage of testing and are just seeing if their servers can handle a high load. I currently have 6 invites and any time I give any away I suddenly have more to replace them...
I've thought that they may never "release" it, and use the invites system as a way of controlling users or something, perhaps preventing spam accounts or something... Note that it's just an idea. I have no proof
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