For some safety and privacy reasons, I don't want users posting their contact information (like email address, phone no, or URL) in the chat room.
To check the patterns like XXXX@XXX.XXX for email,
the patterns like any numbers more than 4 digits for phone no. like 000-0000, 0000000, 000 0000,
and the patterns like http://xxx.xxx.xxx or xxx.xxx.xxx
I think this optional feature is very useful, pls think about it, thanks!