Loyalty programs

I am a firm believer in loyalty programs and other programs that earn free rewards. I am a member of Delta Skymiles, Marriott rewards, Hilton Honors, e-rewards, Best Buy Reward Zone, Upromise, Wachovia Possibilities debit card. With points earned thru these various programs so far this year I have been able to get:
2 airplane tickets to Aruba
3 free nights in a Marriott Hotel in Aruba
1 free night in a Marriott Hotel NYC
1 airplane ticket to Nevada
1 airplane ticket to Florida (for a friend)
6 free Blockbuster movie rentals
$10 Blockbuster gift card
$25 off FTD Flowers
$15 in Best Buy credits
1 year subscription to Wine Spectator magazine
I figure the value of these freebies to be around $3,000. Not too bad. It can be cumbersome to keep track all of the programs but it is worth the time and effort.