Page is a not externally linkable
fishfinger - 12:17 pm on Jan 15, 2007 (gmt 0)
basket.php?action=add or similar. I recommend blocking your basket, checkout, search etc pages in robots.txt as standard.
Robots (Googlebot included) definitely do action forms as I've seen pages indexed via the checkout and basket pages of shopping carts that use forms i.e.