Mainly, I just work on minor edits such as misspellings and other errors as well as revert vandalism when I see it, although I do occasionally add information to articles.
... that Czech industrialist Jan Felkl founded a company in 1854 that would produce globes in 17 languages?
... that the Russian and Belarusian military exercise Zapad 2013 was officially described as counterterrorist, but international observers concluded that it was a preparation for a conventional war?