Many of you may have heard about the USPS price changes for stamps, but they are also raising prices on Priority Mail which is how I ship the vast majority of my items. Fear not, the price changes aren't extreme, but you will see some increases as I update my listings.
I will continue to use USPS. Even with the price hike, shipping USPS is cheaper than other major shippers, like UPS or FedEx. I've only had a problem with USPS once, and that was quickly resolved to everyone's satisfaction.
If you'd like more information on the price increases, the USPS announcement is available here: http://about.usps.com/news/national-releases/2012/pr12_114.htm