Well, It's just a webscrapper... and something else
After you registered your classes on ClassSpy. Our system will keep scanning LSA course guide at the interval you defined, and whenever there is an change in opening status, i.e. new sections opened or existing closed section becomes opened. ClassSpy will send you an email. Yep, that's it!
According to beta testing results, we are 6 minutes to 24 hours faster than the official annoucement. Just for your record. In fact, the system is so fast that it can even capture minor false positives :(