People use sock puppets to do this because although you're correct that it's with the SO guidelines, it feels a bit off, and not uncommon for it to get pushback from those who either don't agree with the guidelines or are not aware of them.

Also, while voting fraud is against the guidelines and actively countered, creating sock puppet accounts is not.

> Also, while voting fraud is against the guidelines and actively countered, creating sock puppet accounts is not.

You're right. For anyone interested here is the relevant post: http://meta.stackexchange.com/q/57682/297429

Doesn't that say that "Answering your own questions with the other account(s)" is one of the things that a sock puppet account should not be used for?

Yes, but the parent comment said "creating sock puppet accounts", which is okay because there might be legitimate uses.

You use a sock-puppet to ask the question, and your real account to answer it. Then you can look smart.