Earn free bitcoins

In this section, you can see different ways how to earn free bitcoins. If your are interested in buying bitcoins for dollars or euros via paypal or credit card see here.

Mining cryptocoins:

Mining bitcoins : The bitcoin algorithm is such that the mining difficulty increases with the network power so that the amount of mined coins remains constant. Nowadays a huge power is put in bitcoin mining over internet. Mining bitcoins with CPU or even GPU is in general not profetable. You may need to invest in sofisticated hardaware in order to make a good outcome out of the mining activity.

Mining altcoins: Many other cryptocurrencies are still easy to mine. You can mine those altcoins and then exchange them with bitcoins via an exchange platform (e.g. bter).

Pay-to-work websites:

There are also many websites proposing Paid to Work similar to Amazon's Mechanical turk where you get paid a small amount for doing a task like ranking the quality of translation or so. Paid to click websites pay you a small amount of money (or bitcoins) to visit an advertise's website.

Pay-to-click websites:

coinad is one of these Pay-to-click website where you get paid for clicking on ads and viewing them for a minimum number of seconds. Click here to register and start to make bitcoins immediately.

btcclicks is another Pay-to-click website. Here also you get paid bitcoins for viewing ads. Click here to register.

There are other Pay-to-click websites that pay in bitcoin or in dollars. However, do not expect to earn a lot with those sites. Most of them will allow the user to only visualise a handfull of ads per day. The rates are also very low ranging from 1 to few hundreds Satoshi per click (1 Satoshi = 0.00000001 Bitcoin). All you can make per day and per site is equivalent to less than 1 cent.

I'm waiting to obtain few refferals to test this option too. I will write about it later.

Webmasters, put ads on your website : 

If you own a web site, you can use coinurl service. This service is similar to Google Adsense. By diffusing ad units on your website you get paid on a Pay-per-click or a Pay-per-view basis. Coinurl seems to have a problem with blogs. They say that they reject 99% of blogspot or wix websites.

Shrink urls and make money:

Short urls are useful when you want to put the link in a tweet for instance, where the message has a strict limit in terms of number of characters. You can turn the long urls short and earn money when the users click on them.

Coinurl url shortner :

You can also use Coinurl service to shorten urls. Shortened urls show interstitial ads to the user before the target website is open. Try here a shortened link to Wikipedia to see how it works.
The payout for their Coinurl url shortening service is low. It ranges from 50 to 250 Satoshi per view. They also say that they accept only one view per IP and per day. Additionally they can decide when and how many views are valid and reject what they consider illegal clicks.

Coinurl is offline as of March 2015.

Adfly url shortner :

If you can receive your money in Paypal or Payza than Adfly is a better choice for you. The payout is higher than coinurl. Especialy if you have a good traffic from the US. The payout depends on the location of your visitors and the type of the ads (interstitial, banner, popup).
Follow this link to create an account on Adfly and start monetizing your short urls.

Get paid to share your links!

 Adfly also started recently its popads service.
I have read numerous positive reviews on Adfly and tested it myself. They pay timely when the gains are above the 5$ threshold.