There are many ways to mine bitcoin these days, however, lots of them are spam (or not worth of your time). For example, bitcoinplus charges a big transaction fee just to withdraw the earnings. There are some websites where you can claim daily winning but it is very small amount. How do you guys mine your bitcoins? Is there really no way to mine bitcoin without purchasing hardware dedicated for mining?

Please share what you think. If you had some bad experience, please post it as well so other people can avoid it. Thank you for your contribution!