With regards to quotes, end quotes often get turned into ?'s with an extra space at the end, especially in pasted texts. This happened to me a lot today with my posts, and I had to go back and edit all the ?'s out and put new end quotes in.
It seems that in pasted texts from a word processor the end quotes are slanted backwards and the forum's system, for some reason, converts them into ?'s.
example:
“Cogito, ergo sum�
...the "?" was supposed to be an end-quote " in the original text from a word processor.
Notice how the system left the forward-slanted beginning quote but changed the backward-slanted end quote into ?. The forum's original quote symbol is, in contrast: " , or not slanted ... it seems Dr. Bizaramor is picky ;)