I have now integrated a rating system to blummy. You can rate blummlets at the "view code" page and the "Rate" link on the top left.
Furthermore there is the first library function for blummy: Blummy.getSelection(). It will retrieve the selection not only in IE and Firefox but also in Safari. If no selection is given you can add a string as parameter that will serve as question in the prompt box.

blummy, rating, library, api