Reverse text works on file names so be on the look out for any files that have exe BEFORE the dot.   For example dXeXe.doc may look like a document but it could also be partially reverted text dXcod.eXe might be the real file name.  If you right click such a file and click properties windows will tell you that it is in fact an application.  Keep a sharp eye out for this trick as I am sure you will run into it one day!