The term "oem unlock" often relates to unlocking the bootloader of an Android device. The OEM (Original Equipment Manufacturer) unlock process allows users to modify their device's software, typically to install custom operating systems or firmware. This process varies by device and manufacturer, and it can potentially void a device's warranty and introduce security risks if not done carefully.
The URL you've provided seems to be a shortened link, likely created using Bit.ly, a service that shortens URLs to make them more manageable and easier to share. However, without direct access to the original link's content or the ability to interact with it, I can only speculate on what the complete text or webpage associated with http://bitly.com/oemunlock might be.