Although it's unlikely, the board in Words With Friends gives the opportunity to create 15-letter words. And with the right setup, they could be scoring in the thousands. This is what makes the classic game so much more than just a word finder.
Each turn creates new opportunities to try and score big, defend bonus tiles, and effectively utilize your letters. With a Words With Friends board editor, you can analyze the board and its possibilities in new ways.
Finding words no longer has to be limited to what's in your rack like from an anagram solver. It takes into consideration all the words on the board and finds the best place a word can be played for the maximum amount of points.
It's a great way to learn the best play you could have made or help you figure out which play to go with.