Debug My Plugin version 0.5 was released tonight with a new option that allows the timestamp to be turned on & off.
Debug My Plugin is the preferred method for debugging all CSA plugins. Combined with Debug Bar, Debug My Plugin offers a non-intrusive way to get additional debugging and processing information from within the plugin.
The new feature allows various plugins, like the Tagalong add-on packs in Store Locator Plus, to output debugging information without the added clutter of the automatic timestamp.
Adding a new 5th parameter to the addMessage() or addPR() method and setting it to false will disable the timestamp.