What it means is simple. he is deactivated, meaning he is still a member of the bucs, still collects paychecks but wont play any more this season. its a move done in order to ship him out at the end of the season for whatever reason (salary cap, he just plain sucks, they are tired of his off the field antics, etc..), and let jurevicous get some playing time to get back to speed following his injury. They dont want someone else getting Keyshawn this year, but they dont want him anymore and are thinking towards next year becasue they know their season is over.
What it means to fantasy football? Well Keenan McKardell just became the hottest free agent out there on the off chance he's still available, which I doubt. keenen's numbers will skyrocket, now why the hell did I drop him 4 weeks ago??????????

The only thing we have to fear is.... another injured Denver RB!!!!!!!!