Are my cobweb floaters unusual?

All I ever hear about floaters are that they're like dark spots. I have those too, but mostly they're clouds of cobwebs -- I've had small hemorrhages in the past, but my doctor says it's not serious and he examines my eyes a couple times a year. Normally I don't notice them except against a white wall, or when I'm reading and have to keep rolling my eyes to move them out of the way or else the print looks blurry. Is that unusual? How bad can it get and what do you do about it?