Very briefly:
1. No intonation on the internet; hard to decipher nastiness, cheekiness and sincerity
2. No-one cares anyway; why bother worrying about whether some English weirdos like your posts?
3. Worse case scenario, can go on holiday, change name, and people will have trouble recalling you anyhow.
4. Assuming you are irritating people, the best tactic is to brush yourself off and change tack. Not to start posting metathreads (which annoy people under the best of circumstances in any case), which just make a big deal of things.