No to za Azuona zapłacimy. 10 euro za rok:
Hola people!
You recently registered for free on www.azuon.com. Our promotion period ends on August 22nd after which you will need to buy a licence for a little fee (the cheaper option is only 4.56 EUR) in order to continue using Azuon in its full mode. Check our website for details.
If you are interested in Azuon and find it to be a cool tool for searching cheap flights (as many of us do), I hope you will understand this move of an independent programmer without a job who needs your support to continue working on this software. The first money will go to a dedicated server which will be used to cache searched flights. This should make Azuon searches significantly faster. In addition, two new programmers will be joining Azuon team in September. They will be responsible for adding more airlines and creating a web version of its user interface, which is something many of you suggested.
A new version of Azuon has just been released. You are encouraged to upgrade to it, since the previous version had a premature-optimization bug that made it not search through all itineraries (e.g. not all Pula - Tenerife two-leg itineraries could be found). You can upgrade with Check for new version in menu Help of the software itself. You can continue using the old version of course.
What's New?
~~~~~~~~~~~
1. New airline: Vueling (that was the airline for July, excuse delay
2. Improved route algorithm now makes more multileg routes
3. New language: Czech
4. New currencies added
5. Number of nights at destination option
6. Automatic upgrade, without need to click Next, Next
7. Azuon now blacklists codeshared routes in order to avoid double-
search
8. Ongoing search can now be stopped instantly
9. XML search files are not dependent upon your regional settings anymore
10. A number of little bugs has been fixed (e.g. unresponsive Add
button in custom regions editor)
Note: You will not receive any further emails from Azuon unless you decide to become a licenced user.
Have a great day,
Oboje T.
Azuon team
Może czas wprowadzić opłaty za korzystanie z fly4free?
. 
a działał jeszcze niedawno poprawnie
masz teraz promo i dostales licencje na 4miesiace wiecej