There are TONS of sites/blogs/services for the various pay downloading services.
I used Rapidshare for well over a year. Love it. Never had problems. Decided to give Megashares a shot on their 6 month deal (less than half the price of Rapidshare). I find that it's a little harder finding some of the megashares, but once you do, you just keep going back to the same sites.
One advantage of Megashares is the fact that it's single-file downloads. Sometimes Rapidshare (and many of the others) can be a pain when they are broken into so many smaller parts (adds up to a lot for HD stuff ). However, if you set up some of the great add-ons for Firefox it pretty much makes it minimal effort.
You can "share" accounts. Like anything, you just have to trust whoever you do it with. I use my Megashares at home and at work no problem. Same went for Rapidshare
This has to be on of the best forums I found out there for all these services:
http://tehparadox.com
and a great index for some of the stuff there:
http://paste2.org/p/401690
This is a valuable search engine for finding stuff that you can isolate by download service:
http://www.gappon.com/
Some other useful ones:
http://www.scnsrc.net/
http://www.zerosec.ws/
http://warezraid.com
http://www.warezthegfx.com/
and of course simple searches on google and choose "blogs" and you'll find endless more quantities
Rapidshare has a bandwidth cap still i think. It's 2gigs a day, but accumulates.
I've found the majority of stuff is Rapidshare and Megaupload on tehparadox site and others.