Indiepath has shown quite innovative way to market their product – and service. Check out 360shooters.com. At the time of writing you can see a YouTube video about the gameplay (Hint: read that last sentence again and use the same for your product). The game costs massive $1, but can also be played free at pjio. (Hint: again read that last sentence, go to pjio and upload your game there).
I like that idea of showing a gameplay video about your game and distributing it as a YouTube video (where it can actually catch some attention) – then mix with the use of pjio and you can get people to play your game online. Sounds like a really simple way to promote your game or product.
Last tip: Check out Fraps if you want to create game videos.