One thing that stands out in this that I really consider important if you don't want to make a bad impression on someone.
The couching part.
I can't stress enough about this rather small, but what I consider it very important thing. Endless amount of times there's been users(that honestly doesn't seem that bad) that start talking with you politely, but it doesn't take long before they just sit their big rump right on top of you with their response "Free couch :D". In all honesty I can see where the fun can be in this, but I just see this as rude and disrespectful to whoever you sit upon. But why one might ask?
As much as it's a joke, thinking of what you actually say, you are calling someone a "couch". A furniture made for nothing but sitting on, and that should be enough to explain it in this case. Counting away what it actually is you end up calling someone, you are also placing your furry butt right on top of someone else and their character, many of the times you don't even know well. It is a game, I know this very well but you wouldn't sit down ontop of someone reading a book on a bench in your local park. If your friend enjoys being a couch it's fine, but people really need to consider what they are doing when they couch random users like nothing, and worst of all is when these users become rude for being told to get off.
Couching is such a small thing, but it leaves a very big impact on the people around you. If anyone is the slightest serious about their characters and socializing with people, getting to know them, they wouldn't want to be couched the first thing in a conversation with a new "friend". Not to drag this on for too long, but it's really people talking to you as if you are a tool of some sort, and there's more ways than couching I believe.
It's really just to keep in the back of your head that not maybe everyone approves of the couching, and combine that with someone having a bad day, and maybe not good control of themselves, it might get less fun. There's even times when I need to go afk, and avoid any of the lay or curl animations due to users doing this from time to time, can get quite annoying.
