Well, I don't know. To me it is all role playing as I am doing nothing of the things my character is doing. I am controling my character of course but I personally know very little about swordplay though my character is quite proficient. My conversations tend to be pretty mundane, I only share OOC personal information with "friendlies". I do chat about the game interface and different equipment that can be found which is itself a bit OOC but is no different than talking to that guy you see all the time in the locker room at the gym about the various gym equipment and different exercise routines. This kind of talk could be written off by the rabid role players as some kind of meta-physical nonsense espoused by some strange sect. But it is more likely to engender a flaming PM or a /report.
When the idea is to learn about the world flowery language and arcane phraseology is counter-productive but the knowledge is essential to be able to play effectively. I, personally, find games more fun when I can optimize my play so as to always progress in the quantifiable aspects.
What happensfo me is that for the first while I get annoyed by my lack of progress due to ignorance of game mechanics. I may have periods of fun when things go well and I may make a few 'friends' who are more experienced than me and offer advice or I may stand around in newbie town whining and complaining about "this stupid game" (whichever game it is.) Then after a while I start to get the hang of the game and start offering advice to other less experienced players hopefully enhancing their play. Finally when I have experienced nearly everything the game has to offer several times or more I get bored and move on until there is new material to enjoy. I played The Fourthcoming (T4C.com)for six or seven years more or less, whenever there were free servers to play on. I also was an official beta tester for them for a while and had access to the test server.
I have to say I have never once been tempted to pursue an ingame love affair or try to get married which seems to be one of the ever popular role playing themes. To me this is just stupid. When that helpful stranger told you two to "get a room" he didn't mean take your computer with you.

However aside from standing apart and making the odd snide comment in context I don't try to prevent anyones elses fun. Maybe I don't want to have great adventures like silly neck biters in the sewers thrust upon me, maybe I just want to live simply and do what I do. All that high-falootin stuff are for the lords and the ladies which, according to the setting don't exist in the democratically elected government. It is just rich wannabes putting on airs. Half of them don't even have the money they play at having but social climbing fraud is a valid role-play device too. And if they delude themselves that is fine too; just don't try to make me believe it, you won't succeed.
but when other characters approach you and begin a conversation, you need to understand that an RP reason for your actions is necessary as well. You are playing a character, and that character needs reasons to be in the hills killing wild beasts. (Preferrably a reason more in-depth than "I feel like it.")
Why do I have to justify my behaviour to others? How is it any of their business why I do what I do? Maybe they are just busybodies looking for ways to spoil MY fun. Are you saying an anti-social, mind your own business type personality is unsuitable for role play?
I may have my reasons for spending all that time hunting Ulbernauts ( although I don't do it what with the running attack fall off the earth bug ... has it been fixed?) but why do I have to answer to strangers? I used to enjoy it before because it was challenging. I don't have to tell you that's why I do it however. If a GM asks me in their official capacity I'll be more than happy to talk about it but that is noot in context is it?
As far as other games go I do play other games as the mood hits me. I have been playing a lot of SRO lately despite their crappy rootki gameguard. I played a lot of anarchy online last winter. SRO is pretty boring all I do is press 4321 4321 4321 4321 until my fingers start to bleed. but at least the scenery is fresh. I got pretty tired of Anarchy online too. I keep coming back here because I am preparing to abandon Winblows someday. Anyway I've been composing this for about an hour now, more than I intended so I will let it go at that. hope you didn't glaze over at the sheer length.