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PayPal plans an ad network built off your purchase history
(www.theregister.com)
This is a most excellent place for technology news and articles.
Maybe they won't suggest things you already bought, but will estimate what you're going to buy next, based on the statistical analysis of people who bought the same things.
Yeah it’s more like, hey you just bought stabilizing jacks and a water hose for a travel trailer. You must have just bought a new camper. Let’s bombard you with add for stick-up-hooks, rv-mattress sized sheets, cheap plastic dishes, etc.