ThredUp Referral Code & Recommendation page. Welcome! Enjoy and share ThredUp referral links on this page. Share all your referrals in your own free page. Fan of ThredUp? Make sure you give a thumbs-up recommendation. Follow and influence friends & others. thredUP is an online consignment and thrift store where you can buy and sell high-quality secondhand clothes. Find your favorite brands at up to 90% off.