Resize corner is in the lower left part of the frame, which forces you to position it in the upper right corner and resize it from there. That is, in opposite of real screen resoultions which starts at upper left corner. Of corse, you can resize it frist and then move it, but it wouldn't it be great to make lower right resize corner (as it normally is in OS X)? I would also love to have a range of standard resolutions to choose from. Other than that it's a very nice idea and a swift alternative to resolution-changing.