Autofriender
Any system which automatically ads friends on a social network system. Similar or even identical to a spamfriender, but not so much about marketing as just conquest, ego or vanity.
That guy has no life at all. His idea of making friends is spending time in his Mom's basement writing autofriender scripts for his facebook page.
Autofriend
The job of a script or program which automatically ads friends on social networking sites.
If there is one thing I find annoying about social network sites it's when some spamfriender script tries to autofriend me.