There is possibly no other single resource on earth that is as influential and as important, whether your interest is in the advancement of natural science or the definite lineup of characters in One Piece. Wikipedia is run by a non-profit organization and is currently running a donation drive. You could do worse than go over there and donate a few yen, euro, dollars or crowns. After all, you know that you're using Wikipedia far beyond what you pay anyway, right?
#1 …and my second, as I click an interesting-sounding link; then my third as I follow another one; then fourth… And suddenly I realize I've spent the last six hours on the site and now learning all about medieval time keeping mechanisms or something. The site is not so much saving me time as much as redirecting it.