A while ago I wrote about Hipmunk's interesting interface and compared it to some other websites.
I found another approach to searching for cheap flights. Let's say we want to go on a trip from Ljubljana (a capital of Slovenia) and we want to know the cheapest possible way to travel from there with no destination in mind and we don't have any time restrictions either. The answer is ADIOSO.
To stick further with the above example we type in a search box: From Ljubljana to Anywhere. And we get these results:
Clicking on any of the found results (after deciding where we want to go), brings us to the next page:
We can now also find a cheapest round trip price based on number of days we could stay in London for the above example.
This is exactly what I missed in Hipmunk.