Shoutbox

Older versions of Messenger Plus! (some old beta builds) needed DLLs to replace special resources, which were not supported by the SkinInfo file. But after a while, Patchou implemented that into the SkinInfo file, so the use of the DLL is not necessary anymore.
I've heard from the creator of the Apple Skin, that he's using the DLL to get rid of all the skinners editing his skin (by making it more advanced, since you need ResHacker). There have been lots of rip-offs off his skin.