I know that pretty well. Most of the mods here do. We get all kinds of new accounts that are "hello fellow ConPro members", post a bunch of comments, and then disappear for a while to skirt around the handshake rule. They say "based" things to infiltrate, and then over time try to slip in degeneracy and corruption. But, fortunately our shills are impatient and filled with hubris, so they almost always reveal themselves immediately.