I haven't had much luck with mining. I tried websites such as BitVisitor, but they don't work. How to people use businesses to earn bitcoin?
Well there are many ways, but if you are looking to earn some small amounts of btc for a review then try this (I don't recomend faucets unless you are a newbie and new in btc world):
I've posted this some time ago.
First of all this can get you a fair amount of free bitcoins if you are patient, so don't expect to get rich of it, it's still free btc so let's grab as much as we can.
Second, we will be combining a few sites to max the profit.
-freebitco.in ( freebitco.in ) this site can payout really high amount but you'll need to have a few referals in order to do so, but it's still one with the best and comfirmed payouts
-dailybitcoins.org ( dailybitcoins.org ) This is one of my favorite btc sites. Request a payment every hour, try to unleast, to recieve a payment and a VOUCHER. Now, redeem those vouchers and you can later sell them at Peerbet.org (just type in hte chat @voucher and paste your voucher code) or you can advertise with those vouchers. It is good to combine freebitco.in with coinurl and then put that shortened link, so you also get btc when someone views your ad
-Coinurl.com ( Coinurl.com ) great site if you have your blog or a website or in a combination with dailybitcoins. Don't have anything else much to say about this
-CoinAd.com ( CoinAd.com ) My favorite site. Very simple PTC faucet with a fairly high payouts that you can earn in 2-3 days (payouts take some time). Strongly Recomend this one
-bitcrate.me and coinbox.me ( bitcrate.me ) ( coinbox.me ) Best colection of faucets, you can hit the minimum withdraw within a few hours and payouts are farely fast, every 6 hours I think. I also STRONGLY recomend these two
You can also, as a lower rank, join a signature campaign (I thik it's lucky 777 or something) and get some smaller amount as payment. Good luck!