You can buy just about anything imaginable from Amazon.com. But the Web site doesn't have a built-in price tracker, and that's where TheTracktor.com comes in.
This mashup helps you acquire pricing information that will aid you in making informed purchasing decisions. You can see the pricing history of any item, so you'll know if you just missed out on a steep discount. Dates for those price drops are listed as well, which is extremely helpful if you anticipate a seasonal price shift. Are snow blowers really cheaper in July? Now you'll know.
Even better, you're able to designate the price you're hoping to pay for a specific product. For example, if you'd love to buy that new ballet tutu once it falls below $400, The Tracktor will email you a notification when that $399 price tag becomes a reality.
As you can see, mashups range from frivolous to indispensable. With a few keyword searches, you may be able to find the perfect mashup for your specific needs -- and then you can start mashing an overwhelming amount of Web data into truly usable information.