We've been following my young son's TB around North America, and he's really enjoyed seeing it move from place to place. It was last logged at a cache on 12/31/05--the same day as another TB was left in the same cache. The next day, a cacher noted in the cache log that he had "picked up the Travel Bugs (plural) for a trip south." The other one was logged, and subsequently dropped off, but my son's was never logged in as having been picked up. This person is a premium member with over 100 finds and a few TBs of their own. I've sent them two polite letters of inquiry, but received no reply whatsoever, even though they appear to still be actively visiting and logging caches. Any suggestions as to what to do next? - Thanks!