timmyb said:What do you do on the web? I (and my sister) will mainly be browsing, emailling and downloading some songs.
I use Bittorrent, listen to web radio, download music quite a lot and general web browsing. I would say I use slightly more than the average user, but I'm certainly not a heavy user.
It's really hard to say how much you will need in your circumstances. 'downloading some songs' could mean an album a day, which might make up 1-3gb a month. 'some' could also mean 10 albums a day. Programs like bittorrent where you are uploading mean that if you are a good seeder, a big disk image might use 10gb of bandwidth.
My advice is that if it is a bandwidth limited service you make sure its on a monthly contract and not a yearly one.