OK. On both boards you take an interesting thread and click to show the printable view. Sometimes you will have to click show all pages at once option. I use Internet Explorer, so that is the routine I'll describe. Then File - Save As - Select text for type and save it. Then, in Windows Explore, take the huge tag it got from the board and Rename it.
For EN World Threads, I use "enw*.txt"
examples: "enwdndhelpwithgladiatorstylecampaign031303am.txt"
031303am being today in the morning, of course
"enwd20modmartialartsind20_031303am.txt"
for Wizos: I use "wotc*.txt" with the same kind of breakdown.
"wotcswrpgwhataboutwookies031303am.txt"
I have used this pattern for over 2 years now and have hundreds of threads saved. It has been pretty easy to find them. I sort them out by game system and story hours and opinion and discussion. There are ways to save the html view but it is space intensive and I am an old DOS head and paranoid about saving hard disk space.
Enjoy. Your mileage may vary.