When you loose, you have to wait for all the other people for hours and hours on end. When you win, no one else ever wants to play again.
Besides, it's too easy. The name of the game is 'equity'. Buy everything you land on, build as soon as you can, and always retain enough cash to pay the average rent of all properties on the board multiplied by five.
And if you're trying to buy your way into a monopoly, don't overpay all in cash; that always messes with people's heads in the wrong way. They get suspicious of dollar figures. Instead, always offer two properties in exchange for one, offer a little bit of cash, and allow the buyer to have a few 'freebie' rent escapes (if they hit any of your properties, they don't have to pay, a few times only). This slight-of-hand often appeals more to people than a plain cash buyout.
Oh, and bankrupting people immediately forces all their money and property over to you. Don't forget that you can build, buy/sell, and collecto rent while in jail.
