Looking around some of the forum threads, I noticed in the WEPR topic (avoid page 2 on) evolution had a series in 3 posts by wflag because his post got cut off.
The reason for this phenomena, to the best of my knowledge, stems from the site's blocking of html code, so when a person includes greater than and less than signs, the block interprets this as html, and subsequently, deletes it.
Below this is a sentence with some random signs on each end, saying, in effect, that it is an example.