Hi Erin,
I would like to contribute to your GMAT site. Please go through my thread in GRE preperation.
Here's the link
http://www.urch.com/forums/gre-math/...ll-posted.html (gre quant questions practice (daily min 1 question will be posted))
I am one of the top faculty from India and I teach quant for the CAT, a national level entrance exam conducted by IIM's for their M.B.A course and this is considered to be the most toughest as well as logical exam throughout the world.
I have a thread on my name itself in another indian forum exclusively for CAT preparation named pagalguy.com. If u can go through that thread it will tell u about my efficiency.
Here is the link for that thread.
http://www.pagalguy.com/forum/quanti...ns-quants.html
Hoping that u would reply as soon as possible i pen off.
Regards,