Is there such thing as time?

Oh, this philosophy. I feel like I've been wasting time. I don't know how bloggers and folks like them can spend so much time online. Do they not do anything else? Because it sure looks like they do. Is time relative? Should I really be spending it better? Then again, I feel like I don't do much in my time OFF of the internet. Is this a good investment? Maybe not when I've got a bunch of other things to do. Maybe I just do this when I'm procrastinating? Guh.