Irregular Ramblings

Today I received an email that was all kinds of unpleasant. I don't consider myself an unkind person, and I try to be nice to everyone I meet online. However, if someone felt I'd given them cause to be mean, I would apologise and make every effort to set things right. I would not be upset if someone I knew and had contact with did not like me; everyone is entitled to their opinions and preferences.

If a complete stranger, however, judges me harshly over a completely ingenuous post I made a while ago, how am I supposed to react?