[JKT]

From what I can tell, it looks for a link with next in the name. If it doesn't find one, it won't work. Not all sites have a next link when they have multiple pages and instead use e.g. arrows. Those sites don't advance when you hit the enter button. At other forums, rather than having Next for the next page in a thread, they will have Next Thread (like here!) which means it will advance a thread rather than a page when you hit enter. MacNN forums are annoying like that.