XJSaab,

If you're using a laptop, you can use Hotspot Shield and browse freely. It connects you through a VPN which makes it secure/private and the web filter in the crew rooms won't detect what you're browsing. The only downside of the small little program is that it'll run an ad or two on every web page you browse but it's totally acceptable, IMO, whenever I want to check fb or any other blocked site. It's reversible also, and not permanent, after you close the program. Besides, if you're using firefox with adblockplus, you'll never see the ads anyway.

...but I do agree it sucks they filter stuff. A lot of jobs will do that, including those outside of aviation.