Digg spell checker doesn’t recognize the most important word!

Digg, (the better /. and a whole LOT more), has a very useful spell checker for people who care to comment & check their spelling. But the spell checker flags the most important word on the Internet these days – "blog". That’s right! Try it out for yourself on Digg. It doesn’t recognize "weblog" too!
It’s probably a result of using an existing but old spell checking library – but it’s a significant oversight, IMHO!
I wonder if the Firefox 2.0 spell checker has the same problem – will check it out when I go back home from work.
Update: Firefox spell checker has the same problem.
BTW Office 2007 Beta2 spell checker DOES recognize these two words. At least the Office team gets it!