Online Shopping Terms & Conditions - Sticky Specials are valid for orders placed from 12/09/2012 with Woolworths Online. Only one (1) Sticky Special discount sticker per (1) customer can be used over the promotion period. A sticker can only be used once. Not all variants of the indicated brands/products may be available at Woolworths Online.
In-store Terms & Conditions - Specials are valid for the promotional period 12/09/2012 to 18/09/2012 for use at Woolworths Supermarkets only, and excludes Woolworths Liquor and Woolworths Petrol outlets. Only one (1) Sticky Special discount sticker is to be attached to the relevant featured product. A sticker can only be used once. Not all variants of the indicated brands/products may be available at all Woolworths Supermarkets. Stickers that have been defaced, damaged, altered or past their expiry dates are not valid.
That doesn't really make it clear, but it seems to imply that a sticker can only be used once, by one customer, per special. But since it's not linked to EDR, it would be pretty easy to do multiple shops I guess? Having said that, the online T&C also seem to imply that you can't use more than one sticky special sticker (i.e. stickers with different promotions) in the one period, while the in-store stresses more you can't use multiple stickers on the same product, not multiple stickers on multiple products.
Not clear at all.
Edit: Okay, I just checked the FAQ:
Can I use multiple sheets/stickers during one shopping trip?
All 9 offers featured on the Sticky Specials sheet can be used during your shopping trip. You can even trade stickers with friends and family to get more of the Sticky Specials that you like. For example if you are a fan of Coca Cola Cans, you could use multiple stickers in one shop, however, only 1 sticker may be applied to each individual product.