That is not the point of the site. From the inspiration linked above, it is clear that it is about comparing salaries in a single firm or in a similar fairly homogeneous setting.

So create a context. Suppose you're a junior developer in Slovenia and want to know how much your peers are earning. Create a pool named something like 'Slovenia junior dev position', enter your annual sallary and post the link to the pool here.

The only thing that kind of bugs me with this app is that the amounts have to be expressed in USD, so i have to recalculate them back to my own country's currency when viewing the results, otherwise, nice app :).

Just put the value in euros (if you're in Slovenia) or whatever, and ignore the dollar signs.

The results are for your own use anyway -- it'll work just as well even if you don't bother to convert.

Of course, that'll skew whatever larger purpose the developer is hoping to have with the data, but if the project seems to have legs, that just provides a big incentive to add support for other currencies. :}