"A jailbreak is the act or tool used to perform the act of breaking out of a chroot or jail in UNIX-like operating systems or bypassing digital rights management (DRM). In the former case, it allows the user to see files outside of the filesystem that the administrator intends to make available to the application or user in question."

Geeky enough as to say that a "regular" guy won't even know what does the term means. Maybe there are plenty of "one click installs" now, but the point is that you shouldnt need to do that. At least on an N800 you don't need to (even though you can, and legally!!).