I kept getting offers from them but the think that bothered me was that their course is only on cassette tapes. I mailed them several times and they never replied (first bad sign), then last summer I asked a friend (who shoots for major magazines) what he thought about them and he replied: "they offer their courses on cassette tapes, that alone should tell you how updated they are in their program" - that answer was enough for me, hope it is for you.
I have since been taking courses with Betterphoto.com and I'm quite happy.
Betterphoto also has a referral program and a "frequent flier" deal and all teachers are pro-photographers of known fame. I just took a course with Rob Shepard, editor of Outdoor Photographer.
Check my website and blog for discounts on HDR Software Photomatix and NikSoftware titles