Get a free sample of John Frieda Sheer Blonde Highlight Activating shampoo and conditioner for darker shades.  You should receive your sample within 8 to 10 weeks.  Thanks goes to Free Snatcher for sharing!

Update 7/13/10: Received my sample, includes a coupon to Save $1.00 off any Sheer Blonde product (expires 11/30/10).