I decided to link more with brief and make my posters and market stratergy interactive using a QR code. Since most 14-24 year olds will have a phone and it will be preferable a smart phone it will have the capability to scan QR codes.
I used a program online which if you create a Gif or video and publish it to a blog or website you can just copy the whole website link and it creates the code for you. I then put it on my posters so when you scan them the poster starts moving (on the phone) Its really cleaver, and quite easy. I think it works really well and fits in perfectly to my target audience.