well... the way I see it is that we are all here
to make money... that is the bottom line.
Majority of the investing public never bought any reference books on trading nor have they ever taken any classes what so ever. Most dive into trading blind. Some learn the hard way and give up. some learn the hard way and still keep on doing the same thing over and over again; wondering why they cannot make money investing.
There aren't many colleges that teach you how to invest and trading techniques, so most of it is either learned by attending professionally taught classes or on your own.
so if you haven't started building a library on trading and getting to know what you are getting involved in, it is very easy to be manipulated on a message board. Message boards used to be productive way back when... but you had a lot of con artists also... it has gotten to a point where no one can trust no one and what ever is said on a message board, you better do your dd before believing anything posted.
The so called pumping and crazy speculation as you call it could be seen by others as a manipulation tactic. Trying to sway others is an art. The markets run on emotions... and a lot of runs in the market runs on higher emotions. Now runs can go either way... up or way down.
The bottom line is, if you find a company worthy of opportunity, then it is worth getting into provided you did your homework. Don't just jump in because a board is lively and pumped up... find out why and how come first. Do your dd, dabble until you are comfortable with your position.