On here? Everything... for some reason there seem to be subtle language differences or slight cultural shifts so things I say get taken the wrong way... or perhaps that's more just that online we don't have intonation and facial expression to qualify and inform people about how we mean things..
In real life... I am pretty good at conveying how I am and people seem to get that :) The only issue I sometimes have is that because I am so nice, and pretty accommodating, some people mistake that and think they can walk all over me... not so as they soon find out... this pussy cat has claws when you piss her off :P
Anything I don't want them to...which is almost everything. Especially that I don't care about their petty little problems that have nothing to do with me.
I communicate fairly well and I can convey what I'd like people to understand about me when I deem it necessary. At other times, it does not matter to me to have others understand things about me.
And there are always some people who understand me very quickly and get me right off the bat. I do tend to wear myself on my sleeve.
I don't know about a lot of people, but one of my friends says that when I talk, I'm all over the place. It's true. I tell her it's because I relate one thing to another, and there are a lot of things. I think it's because I'm such a puzzle person. She gets lost in the conversation. I tell her that there is a point I'm trying to make. Personally, I think she has too much to do that she can't her attention focused. Oh, well...