On repetitive, tautological, heard-it-just-before double posting:
How many times would you notice that the 'guilty party' has in fact constructed something that takes a couple of minutes, and by the time it's
posted, a faster typist or more desperately at-the-ready ATS member has just said what they wanted to say, right over the top of them.
In such cases, who is the discourteous one?
You're right though. There are plenty who might read the first few responses in a long topic and chime in with something that has already been said
by another person whose post they did not have the courtesy to read. 'Laziness'.