Visa-run in Malaysia...

I landed a few hours ago in Malaysia, and to be more specific Penang. A small island on the west coast of Malaysia mainland. A quite vibrant small island due to a long history of being a big harbor for trading.
It is an old British colony which you can see on some of the houses.
If you do not know the term Visa-run, it is a very very big business in Thailand. People stay here for years, but they can only stay one month at a time. So every month they need to leave Thailand for a few hours and then come back. Stupid, but that is the way it is. So I am doing my visa-run to Malaysia....