DV,
I've done that as well. Every now and then I'll think I have a good idea for a new topic, will type out a sometimes lengthy post and then I'll read it over and think it's not a good topic and delete it.
At times too, when I re-read what I post, I'll edit or delete if I think something I wrote might be taken another way then what I meant.

As far as offending people, that's never my intention but there are some members here that I know I can joke with because I know them a little better. I might say something to them that I wouldn't to someone else. Know what I mean????

TIS