Craigslist is huge—not just for selling stuff, but for listings of all types. It's all but replaced the classified pages in most major cities around the world, and you can find listings for everything from apartments to parking spaces to clothes to baby goods—all specific to your community and at a wide range of prices. Craigslist's user base is absolutely massive, and many people turn to it first when they're looking to sell something just because just about everyone uses it for something or another—especially bargain hunting. Best of all, since Craigslist is essentially just a big classified site, there are no fees for listing your items, no middleman charging you to list or host photos, and no one in between you and the seller—which can be a good or a bad thing.
Of course, its efficacy is up in the air as well—any service as large as Craigslist draws in a wide array of users, and many of you noted that the site brings out all of the lowball offers, weirdos who show up to make a sale but then try to weasel out of the deal or try and get you to take less than they promised, or other strange scenario—not to mention the safety issue. We have a guide to selling on Craigslist without getting screwed that specifically tackles all of these issues. In its nomination thread, many of you noted that Craigslist is great, but there's no accountability whatsoever by the site for anything that happens through the site, but at the same time its huge user base and community-based pages make it easy to offload even things like appliances and other large goods you can't ship and would rather have your buyer come pick up