the guy that was puttin up those long posts earlier
If you consider that long, you are going to be miserable in college, lol.
What I post, I consider to be regular-length posts. A friend of mine posts multi-page posts regularly and is not the only one to do so on some of the message boards we mutually frequent. Especially when he is working on something and really gets into his explanations. After all, it is a message board so you have all the time in the world to read or post a message. ;-)
I would say taking the time to familiarize oneself with the "backspace" key would be another good habit to pick up (if only for the same reasons as the above,) but the internet thrives on lazyness. :-/