In my opinion, you should focus on learning, improving your knowledge, skills, rather than spend most or all of your time in the forum to find cheaters, spammers, abusers.
Of course, it's good thing when you find them by chance and report them to moderators due to their abusements.
But, I strongly suggest you not spend your time solely to find them, because it is one of best way to waste your precious time.

Instead, I recommend you to find prestigous guys in the forum and their invaluable, helpful topics. Someone like Jet Cash, TMAN, The Pharmacist, Lauda, iasenko, mdayonliner, hugeblack, etc.
You can learn bunches of amazing things from them.