That would work if the moderators of various subs weren't part of it, quite a few subs will hand out temp. bans when you "accuse someone of shilling". Even if the account was created the day a story went public, didn't post anything until weeks later when the story hit reddit and never backed up its attempts to discredit one side of the conflict.

Some fun oriented subs will however happily ban spam bots that just automate imgur reposts if you point one out early enough.