"Get Link" usually means your cursor is hovering over what your BB considers a web link. So, if you did a search of some sort (in any native BB app), the "Get Link" would open up your web browser and go to that link.
You can always try clicking on the "Get Link" menu option and let us know what happens.
it's in the main menu after "Get Directions" - it is not the same as the "Get Link" that appears when you click an address etc - when you select it, you can type in an http:// address, but anything I type in returns "A problem occurred processing the file"