Forgive me if these feature requests sound a bit demanding. It's just that I find overly polite, carefully worded requested end up being confusing and wordy.

• Smaller Buttons - Those 3 buttons are huge! I'm scared of pushing them, least I upset the mighty behemoths and draw their ire upon me... That, and they take up an awful lot of screen space.
• Filtering - Allow some sort of filter on the incoming files, either hard-coded or user defined. For example, I never want to see any EXE's, COM's, BAT's, or VBS's, as I'm a tad fearful of accidentally clicking on them (gee, I seem to be scared of clicking on a lot of things). The apparent "Very User Friendly" goal of Xolox entails users who may not be all that careful about what they download, after all.
• 'X' Actually Closes - Clicking the "Close" X on a search tab should close the window, not popup a menu with the sole choice of "close".
• Don't GPL - If you're considering releasing the source, please don't GPL it! Some of us are under work-related restrictions that keep us from reading/contributing to GPL'ed projects (Sigh... I hate viral licenses).