I have a private blog. I invited myself (under a second email address that is also registered to a specific wordpress blog) to be a contributor to this private blog. When I received the invitation, I clicked the link, but was asked to create a new wordpress account. I decided not to register. However, as my second address is actually already registered w/ wordpress, it got listed under ‘invites’, but without the option to delete the invite (as that address is registered w/ wordpress).
So ultimately – I invited myself, did not register, was recognized as registered, and am not actually listed as a user on the private blog. There doesn’t seem to be a way to delete myself (second email) from this blog, and I would very much like to use that invite for someone who will actually need it.