Kinda. I do it every once in a while, but I dread someone doing this to me. I also always freak out that they, somehow, will be able to see that I been checking them out.
Everyone with an internet connection does this It's just one of those embarrassing things that everyone does, but won't admit to. It's fine unless you take it to an extreme level, like you start trying to figure out people's addresses or **** like that