This month I have a 50% increase in my BB usage and can't really account for it. The only recent change is my signup to BT Wifi which makes my Home Hub available to passers-by, but I'm assured this does not affect my personal account which has a 10Gb limit. Normally my average is only 6Gb.
Can anyone say how much is downloaded by the excellent TBB speed tester? It's so alluring that I use it almost daily. It says it is downloading various tests but being non-techie I have no idea how much is downloaded.
The only other change is a few long video calls on Skype which I understand can be quite greedy.