eh, when i read about similar passive income routines a few years back, i noticed women like buying silly recipes and kraft related instructions on ebay, among other places via simple paypal transactions. stuff for under a buck. lotta folks sittin on ass at home willing to paypal something for under a buck. its a STEAL. =P
not too hard to borrow some cooking recipes, either via internet or book and post for profit.
otherwise, as far as manipulated keywords and driving traffic, you can also take advantage of bittorrents, and package in site urls and nfo files into lame torrents geared towards guys or self improvement types to "get women", "get money" in your SPECIAL GUIDE.
you could either shoot for advertising revenue or disappointing "full versions" or "services" for the lame tutorials you either post to torrent, or post to ebay. doesn't have to be fulfilling, as long as you deliver something to avoid claims of fraud.
there are tutorials to help you if you google.
..or you could always take some virii off your friends computers and monitor them to see what botnets they connect to, to take advantage of (drive your own traffic). you know you have stupid friends, or people you see irl that always have some damn virus.
..or you could just rent a botnet. (who needs to manipulate search terms when you have 1000+/- computers with internet connections at your disposal?)