At Skype, we believe that better call quality and better availability (which is achieved with an app capable of multitasking and/or making calls over 3G) lead to increased call frequency and longer calls. We also believe that the mobile world is in a period of significant change, for example, with some operators starting to move to tiered pricing models.
In light of that, we no longer have plans to charge a supplement to make calls over 3G. We’re delighted to make it easier for you to talk for even longer and do even more together using Skype.
Alongside the release of Skype 2.0 for iPhone in May the company attempted to inform customers that "Skype-to-Skype calls on 3G are free until at least end of August 2010, after which there will be a small monthly fee (operator charges for data will still apply)." This was met with a lot of criticism and caused the company to delay charges until the end of 2010. Thankfully, they've now dropped these plans entirely.