Postings being removed?

BlankI hate to sound paranoid, but I had put on a posting asking for
information on oxygen systems. It disappeared after several days. I
reposted - same thing - was gone several days later. I then posted what I
thought was a nice bit of information and suggested preflight for the D1 -
same thing - gone after several days.

Frankly I was unaware that anyone could - either technically or ethically -
erase someone else's post. Maybe this isn't what is happening, if so -
anyone have any idea what is? The messages were in HTML - should this make
any difference?

David Reed M.D., Boulder CO