O2's site is pretty light on the details, suspiciously so. My main worries:
- There is no mention of 3G ANYWHERE. No modem speeds mentioned of any kind.
- The allowance is quoted as '3GB'. Per... what? Term of contract (18 months)? Year? Month? Day? The latter is implied, in the quote '3GB is roughly enough to do the following each day:' - but somehow I suspect it is not.
Personally I'd be happy to sign up for one of their USB modem deals, £15 a month, but the lack of specifics makes me highly suspicious.