Regarding reference management: I use Wikipedia as my personal citation tool. Whenever I come across an interesting idea, fact or study, I add it to the relevant Wikipedia article, with reference. That way, all I have to remember is which article I used, and that is not a problem for me. If someone else deletes the material, which is exceedingly rare, I can still find it in the article's history by going to the last version that was edited by me. On a few occasions, people have helpfully updated the article with newer research, pointing out that my reference was outdated.
Zotero is an excellent Firefox extension that allows you to gather and organize citations and to add them to Wikipedia in an (almost) painless manner.
I don't use the watchlist; I found that it sucks up way too much time once it contains a couple hundred items. If I vaguely remember a fact I added to Wikipedia, I can usually quickly come up with an approximate title of the article or with a search that will bring me there. (Instead of Wikipedia's internal search engine, I use Google with "site:en.wikipedia.org" which is faster and better.)