If you've ever bought or sold anything through Craigslist, you know things can get real weird, real fast. Sure, there's a ton of normal business conducted on the site everyday, but there's also a ton of shady stuff, too. If you're looking to unload or pick up used furniture online, there are alternatives.

More: 9 creative — and cheap — ways to upcycle your old furniture

We don't mean to totally dis Craigslist, there is some legitimately good stuff on there if you weed through all the junk — you just might want to keep the following five websites in mind the next time you're ready to do some furniture shopping or selling.

1. AptDeco

If the thought of having a stranger come to your home to buy your furniture creeps you out, AptDeco assures a smooth buying/selling transition for NYC and Washington D.C. residents by using a trusted community of buyers and sellers along with pre-arranged pick up and delivery. From sofas and chairs to vintage furniture pieces, this NYC-based company makes the selling and buying process easy for those who are looking for quality pre-owned furniture for their home in the Big Apple, D.C. and surrounding areas.

2. 1stdibs

If you enjoy vintage decor and you're willing to splurge, browse the collection at 1stdibs to find furniture items from all over the world. This leading online luxury marketplace is known for its upscale antique and vintage furniture. Whether you're shopping for pieces from the Art Deco Collection or the Neoclassical, this site has a variety of beautiful options for those who like high-end furniture.

3. Chairish

Chairish is an online marketplace that exclusively features curator-approved home goods for furniture lovers. Buyers can enjoy free shipping on more than hundreds of items, while sellers can list their items for no charge on the site. If the seller's listing is accepted, Chairish will pay up to 80 percent of the sale amount and arrange shipping. Buyers and sellers can shop and sell anytime using the Chairish iPhone app, which includes an easy process for sellers to upload a photo and descriptions of their items.

More: How to buy furniture: 11 savvy secrets from decorators

4. Lushpad

If you have a love for authentic modern furniture, you'll want to add Lushpad to you furniture shopping list. Lushpad, known as the buy and sell marketplace for modern collectors, is an affordable marketplace for buyers who want mid-century pieces to accessorize their homes. Sellers also have a large group of qualified buyers who are eager to spend money on modern designs or used modern furniture.

5. KRRB

Krrb is known as a hyperlocal marketplace with globally inspired furnishings, powered by local communities. Buyers can discover local treasures in their area or around the world. Enter in your location (addresses are kept private) and search for sellers in your area. Krrb will help individuals sell their pieces and assist buyers in finding unique treasures but it does not deal with delivery or transactions. Once you find your perfect furniture piece, you meet the seller in person and in a public place. Krrb enables commerce and does not charge commission for any sale. Its aim is to create a safe, fun and neighborly selling and buying marketplace.

6. OfferUp

Image: offerup.com

OfferUp is pretty much the Uber of buying and selling stuff online. You download their app to instantly connect with local people selling and buying pretty much anything in your area — furniture included. And just like Uber, buyers and sellers are given a user rating by people they've dealt with in the past, so you know who to stay away from and who is a great source.

Originally published January 2015. Updated January 2017.