New Trade: Walgreen's (WAG) Naked Puts

Today in a taxable account I entered into the following transaction:

02/28/2012    STO 3 WAG Apr 21 2012 31 Puts @.59    164.71

Walgreen's is a Dividend Champion, Dividend Achiever and Dividend Aristocrat. If these puts expire worthless we will earn 11.59% in 53 days on $1421.06 in margin maintenance. This equates to 79.82% annual. If the stock drops below support levels it appears that we can roll down and out for a net credit....and I only roll for a net credit.