Hate to be a spoilsport, but ... $30K (there are 5 prizes altogether) seems cheap to get an "irrevocable, royalty-free, worldwide right and license" to several

Hate to be a spoilsport, but ... $30K (there are 5 prizes altogether) seems cheap to get an "irrevocable, royalty-free, worldwide right and license" to several spell-checker implementations, particularly since you give Microsoft indemnity if they "accidentally" use your approach. You even have to agree that you won't ever ask for additional compensation or credit. http://web-ngram.research.microsoft.com/spellerchallenge/Docs/SpellerChallengeOfficialRules.pdf http://web-ngram.research.microsoft.com/spellerchallenge/Doc...