Someone mentioned in a post I was reading that it is advisable to remove the word "plz" because it is offensive. Other posts here on meta seem to suggest the same thing, but I'm not entirely sure why. Why is this word considered so offensive?
Plz is slang, especially used by an immature younger person.
Often when having a formal conversation people do not like the use of slang in the conversation.
Also, to me, someone not taking the time to write out something as simple as please feels disrespectful to me; like I was not important enough to make our conversation formal. So things like Plz discourage me from helping you, because I feel you don't care what people say, you just want the quick answer and are not willing to take the time to learn.
To say that "plz" is offensive sounds like somewhat of a stretch to me, but everyone has their own limits. In my case I do lose some of my motivation to help out with an answer or comment for mainly three reasons:
From a personal standpoint, I tend to see SO and the other SE sites as professional communities. People who use slang and textspeak unfortunately send just the opposite message, hence implicitly saying that they don't see it as a professional place. Due to this difference of views - we are not here for the same reasons - it is a bit less likely that I will consider answering.
The use of "please" (however it is spelled) creates a strange difference of position in the conversation: It can be used by a person in power (say, a boss) to politely, but firmly ask someone to do a small job for them ("could you please...") or it can be used by someone in a lower position to ask (or beg, rather) for aid (I don't understand how this works, please help me...). In my mind the poster by using "please" is saying that we are not really peers, and again I lose a bit of interest in helping on an anonymous Q&A site.
It's textspeak, which does take me a short while longer to decipher, so I deduce that the poster prefers to save themselves some effort at the cost of me having to spend more effort to decode their text. That earns the poster a point on my twat scale, and also for this reason it becomes less likely that I will bother to answer the question or otherwise help out.
I am fully aware that SO is directed at "Professional and enthusiast" programmers, but I don't see a conflict with the community adopting a relaxed but professional culture.