Bitcoin/Litecoin Payments with WP e-Commerce plugin for WordPress.
If your online store uses e-Commerce platform, you can start accepting Bitcoin/Litecoin payments with this plugin for WordPress e-Commerce.
All you need is SignUp at BTCMerch.com and specify your Bitcoin/Litecoin address.
There is a Sandbox for testing the integration of bitcoin/litecoin to your online store. This allows application developers or testers to experiment without having to use real bitcoins/litecoins.