For find cracked server u have 3 ways:
1. Visit underground steam sites how freesteam, in the most of them are lists of cracked servers
2. Go to your serverlist and put the filter of "not secure servers" (not recommended because the most of these server are only cheaters) ((this respond to ur question))
3. Try settilist programs how the old CSN or MSV, etc
And the point of these projet how Reflector says is to make u feel good playing singleplayer games how HL2 for free without profit and "trying" the online modes of these games in cracked/nosecure servers, and if u really like one game buy it is the better choise.