Internet classifieds mean you can retire your pen and highlighter, but finding the perfect car/apartment/CD BBJW who's WTR still requires constant diligence. Let the ads find you, with Oodle.
A free service, Oodle lets you peruse over 30 million ads from 80,000 classified sites, from Cars.com to the Palm Beach Post -- sorry, CIAShotKennedy.gov. Usage is simple: define the things you'd like to be alerted to by location, price, and loads of product-specific checkboxes (so your cabinets will be distressed, but your GMAT tutor won't be); or just pick an item similar to what you want, and Oodle'll ping you when something matches your criteria. Each listing's accompanied by expected volume of similar inventory, while cars also get market value aggregations -- so you can let the adoring public sort out the price of that collector's Yugo.
One site not indexed is Craigslist, so while casual encountering's out, Oodle does catalog other personals -- so you can still run across a TDHM with polished moves like "usa lady marry me for immigration(k1 visa) purposes. 32 yrs male here. i am in software field." Indeed you are, Sir.