I recommend IC in all my classes. Why buy from a stranger, when you can buy from fellow Realtors®?  Internet Crusade is owned by 3 guys affectionately known as the "three amigos" that are Real Estate Brokers.  2 of them do national speaking tours, teaching us how to get tech-savvy.  They also host an 10,000 member Real Estate Specific list-serv called "Real Talk".  They are also responsible for the newer/better version of the e-PRO® Designation course, and are NAR sponsored!  Want more?  They are less expensive than the big registrars, AND HERE'S THE BEST PART; if you have a question, you get a live body on the other end of the phone that understands your needs specific to Real Estate!!!  Ask them about unlimited alias e-mail addresses using "e-mail forwarding".  It's the only way to go!