Pandora users are limited to the amount of times they can skip a song depending on what type of account they have. This restriction can be annoying by causing you to get stuck listening to songs that you don't care for or heard too many times. Luckily there is a way to get unlimited skips thanks to Cydia.

Due to the terms of Pandora's music licenses, Pandora One listeners are only allowed to skip 6 songs per hour (per station). Free listeners are limited to 12 skips per day. Giving a song a "Thumbs Down" or "I'm tired of this song" rating after it is finished, does not count as a skip. But if you truly grow tired of a song, and decide to make it official while its playing, it will cost you one skip.

The Google Books app has been missing from the iTunes App Store for about a week. 9to5Mac reached out to Apple and Google on Thursday, but no answer from either party has left them wondering why it disappeared. Google Books was just launched last year, and received an update this past April. Why do all that work to only pull the plug a few months later? Or did Apple kick them out?

9to5Mac points to Apple's new TOS that gives them 30% of all sales (they also mention Harry Potter, but what did he ever do to Apple?):

The first iOS 5 beta update to be seeded OTA was released today by Apple to developers everywhere. Beta 4 requires iTunes 10.5 beta 4 to sync and adds wireless syncing support on Windows machines.

When it comes to the OTA update, the process only upgrades iOS 5 beta 3 from the Settings -> General -> Software Update menu. Some developers have reported problems with over-the-air updating but the firmware can be installed manually if necessary.

You can stop cutting your SIM cards, because T-Mobile if offering free micro SIMs for Apple smartphones via their website. All you have to do is sign a two-year contract and enjoy the EDGE network. Doesn't sound like such a great deal if you ask me. The T-Mobile online ad reads:

T-Mobile has been rumored to be preparing to offer the iPhone on their network for awhile now, and even though Apple is trying to buy the carrier, some analyst believe that 2011 will be the year it actually happens. While regulatory authorities examine the possible AT&T/T-Mobile deal, AT&T is claiming that the companies would operate separately for several years. If true, this would make a T-Mobile iPhone still desirable.

Do you have multiple cell phones for personal and business purposes? A company called Vaveliero has figured out a way to help you cut back on your mobile devices. Vaveliero has invented an iPhone 4 case that allows you to use multiple SIM cards on one phone.

The accessory replaces the iPhone 4′s microSIM slot with an external SIM adapter giving you the option of using two accounts on one device.

It's unclear if you need an unlocked phone to use more than one carrier, and the different accounts can't be used at the same time. But it's a cool feature that could come in handy at the office by allowing you to carry one device to work, and by giving you the option to switch to your personal line at quitting time or during breaks.