This is the perfect companion for running! I have a bigger ipod with a lot more space on it, however it was starting to get a bit irritating having to stop to pick it up every time it would fall out of my pocket. Also, it meant that I always had to wear something with pockets!
I saw this online, and it was so cheap, I just thought "why not give it a try". It clips on to whatever I'm wearing and is so light that it doesn't fall off when i'm running. Yeah, it doesn't have an awful lot of space, however, unless you are running a marathon each day, I think theres plenty of space for all the music you'd need. And because it is just for my running, I tailor the music on it to my runs.
It looks nice clipped on, nice brushed silver look. The brushed silver look is also good in case it does happen to fall, if it gets a little scraped, it's not so noticable.
I'd recommend all runners bought one!