Scool Scrabble Tool
Scool is a tool for finding valid letter combinations for Scrabble. It currently uses the TWL06 wordlist. We'll add other wordlists in the future to complement TWL, such as SOWPODS.
You would benefit by memorizing these:

 

Construct your own queries:

Like:

Use the following placeholders for the like query: % matches any number of characters; _ matches exactly one character, !negates; @ intersects (AND's) the results. The like query is a fast and flexible way to find words matching a pattern.

 

Anagram:

Sub-anagrams are coming... stay tuned!

 

Where:

The where query is more advanced. It lets you define the SQL WHERE clause manually. For example, here's a query that finds all 7-letter words with 'able' somewhere inside them.
Add y to 2-letter words
40 words found.

aby              lay              yeh              
any              may              yen              
bay              nay              yes              
bey              oxy              yet              
boy              pay              yid              
dey              shy              yin              
fay              soy              yod              
fey              toy              yom              
goy              yag              yon              
hay              yah              yow              
hey              yam              yum              
hoy              yar              yup              
joy              yaw              
kay              yay

Scool is intended to make you better at Scrabble, by giving you an interactive way to learn new valid letter combinations. It is about learning, not cheating. Perhaps it would make a good handicapper: you play without it and your 12-year-old plays with it, for example.

More tools to come. Suggestions to p@ulmcnett.com. Thanks to Rebecca Slivka over at the Seattle Scrabble Club for some great ideas!