Besides the obvious "powered by pligg" or something like that, I thought I had read somewhere that each rendition of the Pligg CMS had a certain footprint one could search for. e.g. Pligg 7 might always use "New Links Old Links Control Panel" in that order or something similar. The reason I'm looking is that it seems some pligg sites are better protected than others, some are less buggy than others, etc. And so if we knew that Pligg 6 was stable but poorly protected, we could use google to scrape a list of only pligg 6 sites for automated backlinking. Any thoughts on where I could find those Pligg series specific footprints?