People saying 'well it must work, they're still using it'. Really? I am one of those people that as soon as I smell 'sales' talk I shut it down. If it is a phone call, just put the phone down. If it's first a handshake, don't reciprocate, and if it's an email... well, you know the rest. It's not rude to ignore a rude person. This attitude came from my dad at a time when door to door salesman traipsed the streets looking for suckers. George Carlin was right, salesmen are second only to clergymen, in the bullshit department.