I don't think I ever blew into my NES cartridges, but I remember taking them out, giving them a gentle shake with the connector end pointing down, and putting t

I don't think I ever blew into my NES cartridges, but I remember taking them out, giving them a gentle shake with the connector end pointing down, and putting them back in. I expect doing this was as much a placebo as blowing (it's not as if there were chip crumbs stuck in there), but it made me feel like I was doing something productive. :/