Some poor sod at Westpac (with whom I've banked since 1992) demonstrates why it's a bad idea to post to both your personal and corporate Twitter accounts from the same client:
The tweet was deleted about 40 minutes after it was posted, which was even more silly than posting it in the first place. If you screw up in public, you recover in public. Don't just try to pretend it didn’t happen.
I know the person who did this. They 'fessed up immediately interally and there was an "official" response on the Westpac feed later on in the day.
Incidentally, @westpac now has 15% more followers.