I just checked it on my forum, they are fine to put in the subject, I am using the latest Snitz release, I see you are using HuwR's SR4 release. I know in Snitz that the ' is checked during post and replaced with additional quotes so they may be posted code for this is below
if fField_Type = "SQLString" then
fString = Replace(fString, "'", "''")
fString = HTMLEncode(fString)
chkString = fString
exit function
end if
if fField_Type = "JSurlpath" then
fString = Replace(fString, "'", "\'")
fString = Server.URLEncode(fString)
chkString = fString
exit function
end if
By the way, I just checked on your site, you can post " but not '
Neil