What dictionary does uBoggle use?
The SOWPODS dictionary.
How are scores computed?
Correct words count for positive points, incorrect words earn negative points. Missed words don't count towards the score. Words are scored based on their lengths: 1 or 2 character words don't count; 3 or 4 characters are 1 point each; 5 character words are worth 2 points each; 6 character words are 3 points; 7 character words are worth 5 points each and anything beyond is worth a whopping 11 points!