I use about 150 GBs of bandwidth a month. Everything works through my wireless router, including the Roku, a all-in-one printer, 3 laptops, 2 kindles, an Ipad (face time is great for staying in touch), an Ipod, and a netduino board. lol
I found out that I could get a 50MB connection for a little extra. That's pretty awesome for this area, considering I'm outside the city a ways. 15MB works fine for me though, even when watching a HD movie or program, and lots of times there can be a half dozen people here, all on the net at the same time.
I just discovered this little device and I'm ordering a set now for a home project I'm working on.