This would be a very useful tool for my classroom. I can put in any spelling or vocabulary list I want and the site creates fun activities! My students have used this site with the technology integration teacher and they LOVED it!
The best part, I think, is that the activities can be printed. I can then use those activities as extension, re-enforcement, or homework. My students almost forget that they are learning because the games are so much fun.
This site would also allow me to differentiate for the diverse needs of all my students. I can adapt the spelling and vocabulary lists to make it easier or more difficult depending on the level of my students.