Taken from IGN:
IGN:The bread crumb trail is color-coded and dynamically changes based on the interests you show as a gamer. It looks pretty cheesy. Just imagine a line of fairy dust sparkling from your feet, along a path and into the horizon. You dog's job, apparently, is to lead you off the breadcrumb trail.
Full Article"A line of fairy dust sparkling from your feet".

I'm ok with the idea, but if it's like how IGN described it, I think I'd rather have mini-maps.
![Ninja [:ninja:]](/emoticons/ninja.gif)
Then again, the design will probably be altered severely, as it is work in progress...