Yes. Facebook = bad.
Just so you know, the night our rats broke out (January 31st), my rat was telling me about how some of her BRs had found the VMI Class of 2013 Facebook group. They were taking down names so they can help welcome them to VMI next year.
It's generally frowned upon to claim to be a member of class that -- to the Corps -- does not yet exist. You aren't a class until after Breakout. Until then, you're a ratmass. The ratmass of 09+3 just became the Class of 2012. They'll be around next year to help train and mold all y'all, the ratmass of 10+3, into the Class of 2013. You aren't there yet, but you'll get there eventually.
Facebook in general can get you into a lot of trouble at any military school, be it VMI or somewhere else. You're allowed to have it as a rat, but there are restrictions. You aren't allowed to use the chat feature, and you aren't allowed to use it to communicate with upperclassmen.
As an upperclassman, you have to be very mindful of what you represent. We've had a number of cadets receive penalties for making inappropriate comments on Facebook. Even if you aren't part of the VMI network, you still represent VMI. Furthermore, this stuff will follow you into the real world. Employers these days love to google job applicants. If they check out your Facebook and find pictures of you drinking underage, it will not bode well for you.
If upperclass cadets try to contact you through Facebook before you matriculate, it's best to just not respond (or to politely tell them you've been advised not to communicate with upperclassmen via Facebook). The only exception to this is if the cadet is a rising First Classman (in this case, Class of 2010). A lot of times they'll go on Facebook to go rat shopping, to find someone from their area or someone with common interests.
Beware of the pitfalls presented by modern technology.