Well, umm... yes and no.
In real life there are only some occations where I actually build long sentences, and that's when I am actually saying something that I care about, instead of the usual small talk kind of a thing that doesn't matter to me too much. But if I was trying to make it sound the same I should have about thirty second pause in the beginning of each post (accompanied with a smiley that stares intensely in the distance/floor), which wouldn't be too practical online.
Besides, English isn't my language, so this wouldn't be close to the way I speak in English IRL. I've got a better vocabulary here.