You have to understand SDK's point of view, because he must have a lot going on in his life. It's NOT like "Microsoft shutting down for no reason," because that is an entire company with fallback workers. This man is doing all his services for free with his own time, and something must have come up that forced him to stop. His copyright section states "This mod is provided freely and may be decompiled and modified, either with a decompiler or a bytecode editor."
This situation is not the first of its kind. Remember The Aether? Equivalent Exchange 2 is also discontinued. And what about Single Player Commands, on the verge of becoming opensource and discontinued by the original author?
Im sure there are people who can port it to 1.4.7; but this guy wants it to be scrapped apparently.
As long as you have permission form the maker of the mod, It's OK. Scotty hasn't made a single post since august so.. I wouldn't get my hopes up if I were you.
It also means he's unlikely to object.
If someone were to claim they have permission from SDK, the forum mods here would have no way of knowing whether that's true or not if the original mod dev no longer communicates.
In other words, they aren't going to start banning people who link to self-updated mods unless they KNOW that person doesn't have permission. So updating ModLoaderMP and posting it here is probably pretty safe.
There are only two types of devs with abandoned mods: those who are happy to have someone else take over, and those who would prefer to see their mod disappear rather than let another dev touch it.
The second type deserves absolutely no respect, IMHO.
I assume SDK is actually one of the first kind, although he hasn't bothered to show it.
To all the devs wanting to take over, if a mod is genuinely and obviously abandoned, I say go for it.