Great marketing idea..but ringtones????
Honestly, marketing ANYTHING takes the same amount of TIME and EFFORT. One person said that they posted scores of videos others joined a marketing firm to farm out their videos which is great because most people don't even get that far. Good for them.
my point is...If you are going to market something by using youtube, adsense, adwords, craigslist, etc Then make it worth your time and effort. It's seems like a lot of work to download, edit, upload, get clicks to video all for a few cents for ringtones....
Think bigger...whatever it may be. Use these great tips given here but aim higher!
Good luck to all