I don't think so. I've had a few people write me out of the blue. I don't know these people. I haven't had any interaction with them so why do I need to respond to them?
In some cases, yes....but not always....I have had some people get very angry and verbally accost me simply because I didn't respond in what they considered a timely manner....little did they know, I could not respond at that particular time....but they showed me their true selves, I suppose...
No, it's not.
Manners cost you nothing but if you were offended well that's a different story.
I get your drift but in an open forum like this, I think there are, in comse cases, many reasons that you might not want to.
Like if an underage person is coming on to you.
Yes it is rather rude to do such a thing.
I always respond