Re the links. It is best to omit the htpp://www bit in INTERNAL links to Mudcat. The reason for this is that Mudcat has in the past and may in the future have more than one address for the forum.
If (using a real example from the past) www.mudcat.org was down and loki.mudcat.org was being used as a backdoor, any link given in full for www would fail but a relative link would work.
Unless there is a fairly recent change, the messages parameter does nothing in terms of taking you to a specific post in a page. All it did/does is gives a unique link for the thread with that number of posts so you see a blue link again when a thread you have visited has a new post added. A very crude but effetive all the same method.
I'll tell you something very interesting. Or very boring. If you type http://mudcat.org or http:\\mudcat.org it doesnt matter.
It does matter. Some browsers may convert \\ to // for you but otherw will not. The correct and only method is // .