First off I am going to say that I am indeed new to this site. Secondly, I have read this whole thread thoroughly. Some of it I agree with and other aspects of it I do not.
I am a 19-year-old female who loves to play video games as well as reads a lot so you could say I have fairly better than average knowledge of grammar and spelling. Yes there are people who use the abbreviations for a lot of words or some other form of text and it is VERY annoying. I on the other hand try my best not to use it so much because I know it's hard to read but I will shorten a sentence with reasonable abbreviations such as: b/c (because), w/e (whatever), lol (laugh out loud), etc. I use mainly those and a few others especially when in a group and we're in the middle of fighting something.
Also, most of the time I act mature. I do admit I have a few immature moments, however, those are mostly when the situation is appropriate for such when the group/guild is joking around or something. Other than that, I'd say about 98% of the time while playing WoW I am mature.
The people I consider "kids" are those who constantly act like jerks, idiots, immature retards, etc no matter what age they are. If someone is 34 and they're acting like they're the best and being a jerk about it, then that "someone" is a "kid" to me. Also, no one is a "kid" if they were complimented on something from another group player.
Here is such a recent experience over this past weekend:
-SATURDAY NIGHT-
Auberdine in Darkshore was getting hit by about 3 to 5 horde players on the Bladefist server. I contacted my GL (Guild Leader) and he came to help. There were several other high lvl'd Alliance avatars there as well, including some 70s. The small Alliance group ended up in Astranaar and eventually ported out via a mage's portal. The small group of Alliance there was invited to a raid group and for the next 1.5 to 2.5 hrs that group raided different Horde territories since we got up to about 35 people in the group. I used my VC to talk with the leader of the raid group as well as others and I gave several suggestions. All was done and over with a little after 10 PM server time and the raid leader went offline. No one ever asked me what my age was either.
-SUNDAY AFTERNOON-
Said raid leader from night before wisps me and we talk for a bit. He compliments me on my fighting ability and how well I helped with the raid as well as coming up with some suggestions that no one else had come up with (and I'm being truthful about this). He asks me to join his guild and asks me to ask my GL to see if he wants to join as well. I told him I'd think about it.
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So in the end I was mature, thoughtful of all the other raiders, contributed what I could and it got me a very good rep with a very well experienced player. Especially considering I've only been playing for about 5 months now and my only avatar at the moment is my main, being a Lvl 63 Night Elf Hunter.