It's funny that you ask this... because I've been doing it a lot lately. Every day I check my watch list, primarily to see if the person being added or edited is related. If not, or especially if they have no parents listed, I start researching. I can usually find traces of them and their families. I add sources and even parents, siblings or children as recorded in census, birth and death records.
The one problem I come across with the ged.com files is that I don't understand all the junk tags. Since I don't understand what their purpose is, I'm hesitant to "clean them up." Just because I think they're "junk" I'm not sure if they have some value to someone. What is safe to get rid of? Are their any guidelines that you can direct me to?