Coinhive and Monero isn't ideal for this purpose for plenty of reasons:

• it's not super efficient to mine with CPU

• various blockers can and will detect such JS miners (JSECoin is in the process to be whitelisted)

• it can be misused and exploited in various ways (JSECoin forces opt-in windows)

• it isn't made exclusively for browser mining

I love Coinhive because I'm a huge fan of Monero but JSECoin seems to be a healthier alternative.

Still not huge bucks but adoption should be started somewhere.