If I have it right:
Geocoins are actual small coins and Travel Bugs are items that have a "Travel Tag" attached to them. Those items can be anything (toys, clothes whatever the person wanted). If you find a tag or coin that hasnt been activated on the site you can keep it, use it or trade it. If it is activated you should let it travel. I think the whether or not to move it against its goal is debated as in your example you can move it to FL then I (in tampa) could be going to Cali the next day. Getting somewhere isnt always a straight line. I would say its better to move them then let them sit too long.