[crgt]

What if you were, say, Facebook, and had lots of visitors, good time-on-site metrics and you were still searching for ways to grow revenue? Might it make sense? Seems like their entire userbase could combine to mine quite a few bitcoins.. But I'm not a miner, so perhaps I'm wrong? A quick search turned up a Fast Company article that claims (http://www.fastcompany.com/3005269/facebooks-daily-mobile-us...) 618 million daily users. Assuming that most of those folks aren't logged on all day and many (more than half!) are logging on via mobile, you'd probably only be able to convert a fraction of those to effective miners, but even still it sounds like a lot of bitcoins per day. Perhaps they might offer users the option in exchange for better privacy controls and/or an ad-free experience?

[rmc]

Remember that the bitcoin network adjusts itself to try to only have about 25 bitcoin per 10 minutes mined. So if you were to jump into the pool with loads of cpu power you'd get a few bitcoin for a whole, then it'd adjust to be harder, raise the bar, and you're back with the same generation rate

[IanCal]

Yes, but you'd be getting more of the pie. The pie remains the same size, granted, but you can still make quite a lot from owning a significant portion of the processing power.