I think in large part it's the nature of the medium. Without body language, facial expression, voice inflection, real time feedback from the other party, etc. things we say here can sound much different than in a conversation. It happens to everyone (except SLL I think) once in a while.

I try (not always succeeding) to take the mindset of writing a letter rather than having a conversation and this does help, at least for me. If I wrote what I thought most of the time you'd really think I'm an ass.

Any chance of seeing that link?

Have a good one.