Last week Steve Jobs deemed it permissible for web applications to legally work on the iphone. Prior to that you had to hack the iphone and risk possibly turning your phone into the dreaded ibrick or in other words a non-functioning hunk of pricey plastic.
But finally with the latest update there are all kinds of friendly iphone widgets. My favorite is a very High-tech Cocktail Mom-esque shopping list program called One-trip.
With dozens of pre-existing items to choose from like milk, toilet paper, or cheese One Trip makes it a breeze to add items to a handy little to-buy list.