Nice program Andrei.  I would like to see the following.  Currently, I have tagged a number of doc, docx, pdf, etc documents with keywords (right mouse click the files, go to properties, then click on the Summary tab, type in the keywords, comma-separated).  Could you add the capability such that when I drag such a tagged file into TaggedFrog that it automatically grabs these prepopulated keywords?  That would be a wonderful feature.