This issue is always the problem few years ago. Spammings are everywhere because many people has this mindset that they can earn extra income just by posting and spamming around the forum.
Theymos is doing something to make this forum a better place. I hope the implementation of the new forum will go smoothly.
About scammer I suggest that having a posting fee is recomended by doing so, it will decrease the possiblity of a project or an ICO to scam people.
This will never be a perfect place, but it can be a better place for everyone who uses Crypto and a good place to learn.