Sorry for the Quechup spam
To anyone who's received an invite to Quechup from me - sorry, just delete it and avoid the service like the plague. Like lots of other people, I got an invite from someone I knew, signed up, and it spammed everyone in my Gmail address book with an invite - without my giving it permission to do this.
Funnily enough, it appears to have done this after I deleted my account, too, judging from the times of the auto-responses.
BoingBoing covers this hideous "service" here.

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