Dumping the log does not clear the logs, although you can diff the before and after versions of the logs...
I kind of assumed if you had everything working without being registered, you must be using the reginfo hack, but maybe not...
Some people do it because they have a lost or stolen device (in the latter case, we assume they only found out after buying it), and they want to use e.g. collections.
Some people just want "privacy", whatever their personal beliefs about that are.
