Financial digital divide opening up, between broadband and lower-bandwidth users. Why? Besides obvious things like web-only content like viral media videos that are unavailable or take days to download for people with really slow connections, there are the websites that design in really heavy flash and suchlike, and don't have a bare-bones version of their site for people on dial-up. These people, at least in theory, will either a) upgrade if they can afford it, or b) go away.
It annoys me.