I stumbled across this article a bit over a month ago and it lead me to discovering the mobile app Dictionary Universal which allows you to search the definition of a word in multiple dictionaries at the same time. It's nice to see different dictionaries definitions of the same word.
The only problem I have with it is that I can't seem to find any legal copies of dictionaries to use with it in the supported Lingvo DSL and Stardict formats.
That being said, there are a few websites that allow you to add all the big names in dictionaries to the app. I just wish I could do it above board.