If you accept credit cards, check that you’re displaying the logos for those cards on your website. The logos don’t need to be large or in too prominent a place, but make sure visitors can’t miss seeing them.
Here’s a handy tool for generating a graphic containing virtually any credit card or payment logo. You just tell it the height of the graphic, the background color of the page, and which logos to include. They email you the code to place on your website or, if you prefer, you can use the URL in their code to download the graphic and load it onto your site yourself.
Here are a couple of examples from the site: