Some of you may not know, that one of the most through discussions about top posting (writing the answer above the original message) can be found on the clamav-users mailing list. (
Here.) The conclusion:
Wrong:A: Because it reverses the natural order of conversations and makes it confusing as to who posted what.
Q: Why is that so annoying?
A: Top posting.
Q: What is the most annoying thing about mailing lists and Usenet?
Wrong:Q: What is the most annoying thing about mailing lists and Usenet after top posting?
A: You asked what is the most annoying thing about mailing lists and Usenet after top posting. That's no-trimming.
Q: I asked what is the most annoying thing about mailing lists and Usenet after top posting. You answered no-trimming. Why is that so annoying?
A: You asked what is the most annoying thing about mailing lists and Usenet after top posting. I answered no-trimming. You asked why is that so annoying? Because scrolling through all the old info looking for the answer wastes a lot of time.
Good:Q: You said no top posting and no no-trimming. Then what?
A: You asked then what. Then bottom posting and trimming.
Q: You said bottom posting and trimming. Is that annoying?
A: You asked if that's annoying. Well, that's a good topic for another thread in clamav-users.