These days, we're trusting more and more online retailers to protect our data. Many websites require you to make an account, even if you only plan to shop there once. Faced with the difficult task of making up a unique password for tens, maybe hundreds of sites, many of us fall back on the bad habit of using bad passwords. Unfortunately, a new study showed that 64% of online retailers don't seem to care whether their shoppers are making strong passwords or not.