One of the newest extensions on Google Chrome World named CryptoTab permits you to mining BTC while you have your Chrome session window open, using a little power from your CPU and your GPU to mine this cryptocurrency super fast (works as a foucet).
All you have to do is click this link I let you here, install the extension, open your Google Chrome session and start mining.
Spread the word, don't let your friends out of this great business
Link to install CryptoTab:
https://getcryptotab.com/182790