I've got a new iMac (Santa must have thought I was a good boy this year) and I want to move data from my 3 year old MacBook (Intel, running Snow Leopard). I realise I have a few options for this, but migration assistant is currently looking better than either starting from fresh or Carbon Copy Cloner etc.
What I would like to know is if migration assistant will bring across everything from a 3 year old system, including all the remnants of applications I have installed and deleted etc. If it does has anyone got any hints to stop it doing this?