Archiving of [[Talk:Cold fusion]]
It's likely to take a lot more discussion before that article settles, given the attention arriving from at least one Wikipedia troll, and maybe more than one. Probably the way to handle the problem of long pages is not auto-archiving, but rather the use of subpages when a discussion becomes extensive. I can't handle that tonight, real life intrudes, but I'll do it. Subpage discussions can be linked from and reported back to the main talk page, keeping that page relatively small, and then only those who are actually interested need read the subpage discussions.
There are also other possible remedies for the malady. One is to archive long sections to history, with only a link remaining. This is not a good idea for anything that might still need comment, though. One advantage of subpage discussion would be that the discussion can be continued by anyone, later, such as "We were really idiots back then, given what happened the next year." Archives aren't really intended for that.
And, of course, another possible remedy is to indef block anyone who dares to discuss a topic in depth. Obviously, the person is a crank, since who else would give a fuck? It's an irrefutable argument, because anyone who tries is obviously a crank also.