It basically means that you can download at 4Mb and upload at almost 2Mb. The important one for browsing the web is the first one, the download speed - the more here the better
http://www.speedtest.net/my-result/3339041962 don't know why the result disappeared but it said I was on Virgin media, and I am actually with BT superfast fibre wotsit
Dont have any. My stupid house doesnt even have a phoneline. I log on to bt hotspot with dads account. Its a bit hit and miss but its free