Ab swing -this no spawm

1

Is this good for building your abs.
if you think so, I will buy it tomorrow.
it comes on the TVshop.

thanks

http://www.asontv.com/products/1031336094.html

http://www.wonderfulbuys.com/sports_and_fitness/ab_swing.html

http://www.target.com/gp/detail.html/601-8508790-8309704?asin=B00008VEKL