And I quote: "Microsoft Research in partnership with Bing is happy to launch the Speller Challenge." First place is $10,000, starts Jan 17, 2011, contest is on May 27, 2011.
We have the baseline implementation of the required system in our tutorials, see Spelling Tutorial. The system is not wrapped in a web service and you will need to dig up your own training data—Wikipedia anyone?
There may be issues if you want to use LingPipe tools to build the system, here is our Royalty Free License. For the purposes of this contest we will create a free license for contest use that is non-restrictive. If you’d like to request a free license for the contest, send me an email at firstname.lastname@example.org.