I've been stalking the dot com domain for IncrediBILL for over a year now when it transitioned to a domain park. Not sure what was going on with whoever owned it last, but the domain park version of the site went offline, no way to make a purchase, and the email address in the WHOIS record for the owner of the domain park bounced. So here I'm sitting with a credit card in hand, willing to spend money within reason, but no way to contact the current domain holder whatsoever.
Patiently I waited, as I figured since it expired in 2012 that nobody was going to renew it if they weren't even bothering to make it available for purchase and didn't keep any active contact methods available.
Sure enough, like clockwork it expired and nobody bid on it, whew! I put the obligatory $10 bid on it for a placeholder, and walked away with a domain for pennies on the dollar that I'd obviously wanted and was willing to pay more.
The funny thing is had the owner ever just checked Google they would've run across my name at the top of the search and contacted me. Most likely, unless they were too greedy, would've easily made a lucrative transaction instead of letting it just slip away for free.
C'est la vie!
Maybe this lesson will inspire a few of you domainers out there to step up your game as I'm sure there's a lot of money being left on the table by being either lazy or too greedy :)