You know what grinds my gears?
People who won't tell you where they're from. And they are listing big, pricy objects for sale. Like bicycles for instance. Or they want to buy one. Buying or selling, either way.
They post a single sentence "Bike For Sale" or "Bike wanted." And no info about where they're located, or where the item should be picked up from or delivered to. They do not understand that shipping a bicycle means 3 + hours of careful packing, plus a shipping cost starting over $60.
I think it all falls into the category of general ignorance that I see rampant on Craigslist all the time. Take for example, tires for sale. "4 15inch tires, on rims, $200." Typical ad. WHAT kind of rims? Steel, aluminum, and oh yeah, what do they fit??? Are they 33 inch truck tires, low profile 185/50's to squeeze onto your Honda, or just some boring steel wheels off your base Camry? Go look at them, read the numbers on them, and report back! It matters! The only people who want to buy your stuff are people looking for that specific stuff!! Help them out here.
The same lack of information occurs on local classifieds, Craigslist, and Ebay. It even happens here, but I know most rat rodders are interested enough in the details that they'll tell you things you'd never even think to ask. But it's just not excusable to leave out information like, automatic or standard, 4cyl or V6, sedan or wagon, men's or ladies frame, 20" or 26" or something else.... you get the point. Or should. If you don't, you have no business selling anything to anyone.
--Rob