Lesson the Second: If you do start a comm challenging another one, don't make a post advertising it in the other comm.
Lesson the Third: If you are going to advertise in the other comm, don't
bitch about that comm in the comments of your own post.
Lesson the Fourth: If you are going to advertise your comm in even more other comms, make sure they are in the same fandom.
Lesson the Fifth: If you are trying to get pimp your comm everywhere, don't be surprised when people from other comms comment.
Lesson the Sixth: If you are trying to get "like 1600 members", don't bash ships - like, say, Doctor/Rose/Jack - when you have advertised in a comm for that ship - like, say, better_with_3 (post since deleted).
Lesson the Seventh: If you have gotten your friend to make you a mod of a comm, don't bash the ship the comm is design to appeal to in the comm's very first post.
Lesson the Eighth: And, if you're going to ignore all of these lessons... well, just make sure you have enough popcorn for everyone who likes a good comedy of errors.
Here endeth the lesson.
ETA: And guess which comm mods have been wanked for an entirely different matter? I think we have a new comedy sensation.