Bottom/Top posting is like deciding which side of the road to drive on - it's more important to do what everyone else does, rather than follow a "correct" system.
Every Silicon Valley corporation I've ever worked for has followed a top-posting model, ergo, I top post when communicating with them.
On the flip side, Open Source mailing lists like LKML bottom post, so I bottom post when communicating with those communities.
At the end of the day, after 10 years of daily use, I've never really noticed much of a difference between the two systems - as long as everyone uses the same approach consistently within the community, it's pretty straightforward to follow the thread.
Every Silicon Valley corporation I've ever worked for has followed a top-posting model, ergo, I top post when communicating with them.
On the flip side, Open Source mailing lists like LKML bottom post, so I bottom post when communicating with those communities.
At the end of the day, after 10 years of daily use, I've never really noticed much of a difference between the two systems - as long as everyone uses the same approach consistently within the community, it's pretty straightforward to follow the thread.