The trick that always worked for me was to insert the cartridge and then pull it out just enough to where the near edge of the cartridge would just barely scrape against the console as it was pushed down. This was far more effective than blowing on the cartridge.
super-serial|13 years ago
willstepp|13 years ago
pserwylo|13 years ago
My house mate and I are currently moving through our Killer Instinct phase on SNES, and I just lent my NES to my 18 year old sister and her boyfriend who borrow it regularly.
I'm taking this article very seriously, as I am from the family of people who blew in the cartridges (and the console) up until I read this :)