"'WARBLED' is not in the dictionary"? it is in mine.

The developer addressed the dictionary question on the intro to the discussion. The basic version uses the Unix dictionary. He or she also provides a version (larger file) that uses the full Scrabble Players' dictionary.
http://www.themaninblue.com/experiment/SSCrabble/long.htm
So there ya go. ^_^

what's the big deal? - I've been playing a nicer scrabble (called literati) with friends on-liner on yahoo games for years...

That was just what I needed. I cleared all the tiles with 470 points. I think it would have had higher but it didn't accept alot of my words... I think my biggest word ended up being 5 letters.

I tried Literati on Yahoo Games and lasted about one game -- not using Scrabble tile values and bonus squares and dictionaries makes it a little unfamiliar, but not being able to manage your rack by trading in tiles and not using a standard letter distribution (you can get a rack of all Z's, and you can't know that a Q on the board means you won't get a Q) means that you can't play a strategic game at all, which isn't very much fun.

If you want to play true online scrabble their is a great version here. It uses all the same rules as real scrabble and it emails you when it's your turn. Great fun!