Establish categories for each thread... Stuff like:
Military conflicts (possibly split between Intracorporate and Legion)
Science and Technology
Geography (exploration, established dates of settlement, that sort of thing)
Political and cultural
Possibly (or alternatively) with additional threads per faction?
There is a website that I found that was perfect for this (
www.tiki-toki.com), but I have no idea if there are technical or legal hurdles there...