List Your Sneakers Properly 

We know — putting every Roman numeral possible as well as "SB" and "Yeezy" in your listing doesn't cost anything extra, and will get thousands of extra eyes on your auction. However, there is nothing more annoying than having to weed through 7,000 results for "Air Jordan XI" when there are only 82 actual XIs for sale. People tend to get turned off by that and might even skip over the listing even if you have what they're looking for. Make it absolutely clear what exactly it is you're selling — help out the folks you're actually hoping to sell to.