Last Wednesday Wizzair has started flying to Finland and its very first route links Gdansk to Turku (where it became the first airline to use a new low-cost terminal). It will be interesting to observe the development here, because until now just one truely no-frills carrier is known in Finland (Ryanair flying to TMP).
As far as I know the bookings are going well and (assuming travel forums are relevant as the opinion polls) some other typical Wizzair destinations like BUD, Bulgarian coast or KTW/Krakow could also become popular here.
Btw (edit). It's interesting to estimate the travellers' preferencies by counting the hits received by different countries on travel forums (like in Finland Suomi24.fi/matkailu). Spain, Italy, Bulgaria(!) and Turkey get the most.