We've started a few bugs, and some of them have gone thousands of miles, while others have made it as far as...the cache we left them at.
I've currently on a long trip, so I've picked up a few and left a few, but I'm wondering: why do you pick up a travel bug?
For me, it's clear goals on the item. There's an added bonus if the goals direct me to do something interesting (go to national parks, eat at Chinese restaurants), which also lends itself to taking pictures and uploading them.
What else? What makes a travel bug successful?