Slightly bizarrely, you can change the 'title' part of Lithium URLs to anything you want, without changing the page that gets resolved. Lithium only actually cares about the ID part.
For example, this is the URL for the developer forum:
http://lithosphere.lithium.com/t5/developers-discussion/bd-p/studio
However, this resolves to the same page:
http://lithosphere.lithium.com/t5/foo-bar/bd-p/studio
(In technical terms, the server responds with a 301 redirect to the correctly named URL).
In fact, you can do more than just change the title - you can change how a board is displayed by manipulating the URL. For example, you can get the developer board to display as a blog by replacing 'bd-p' with 'bg-p':
http://lithosphere.lithium.com/t5/developers-discussion/bg-p/studio
You can find out more about how Lithium URLs work on these pages:
http://lithosphere.lithium.com/t5/support-knowledge-base/Lithium-Platform-URLs/ta-p/32509
http://lithosphere.lithium.com/t5/support-knowledge-base/Understanding-SEO-Friendly-URLs/ta-p/6560