First sorry for my english, but I try to do my best - I´ve already get so much good ideas from you that I wanna give something back to the community :-)
However I found on a german facebooksite with European Travel-Deals something what is a really good deal for all people who have less money but a lot of time :-) and travel experience.
If you are rating hotels at holidaycheck.de you can get for every rating 250 points at a programm of german Tuifly.com Bookingwebsites. After 11 ratings you have enough points for booking a free flight (really free, no Tax to pay) on Germanwings (all 26,99€ flights on Tuifly.com). If you have more points you can also book flights with Tuifly, Air Berlin, Germania or Sunexpress on Tuifly.com.
Its something like a cashback programm, so you can also get points withbuying things in german online stores.
Even if you do not get 11 ratings, you can get a diso...., because you can pay with points and money, so you will save 2,50 for every 250 points. :-)
A complete story is in this link in german language:
http://www.facebook.com/pages/Exbir-...3639783?ref=ts