Just posted an update to this as Yahoo have now removed the Query Inspector interface. Oops! :-)

Something rather odd in those 1000 suggestions for google – while almost every conceivable misspelling of 'google.com' appears – google.ocm, google.cim, gooogle.c0m, google om, googlecom, etc. – the exact phrase 'google.com' does not.

It does not appear, however, that they're manually excluding it – they just refuse to suggest anything ending in .com, with some rather odd results – for instance, typing in 'yahoo.co' yields the following suggestions:

yahoo.con
yahoo.coj
yahoo.cok
yahoo.coo
yahoo.coc

Not exactly the most helpful thing ever.