Hotcampus vs Usercard

The local student marketplace

Hotcampus is a free student marketplace that makes it easy to arrange buying and selling online and meeting on campus for the actual exchange of goods and money. With Hotcampus, students can buy from otherstudents stuff they don't need anymore, like used books, at a fraction of the price and can sell stuff they don't use and make some extra money.
Hotcampus brings safety, since every ‘trade’ is done on campus between verified students and is simple to use. It lets you search product listings by university, city, or state and contact the seller with one click.
Hotcampus is the easiest way for students to buy and sell on campus.

Discover and share everywhere you are officially online.

Usercard is a directory for social media handles. Usernames are not universal; Usercard gives individuals, organizations, and brands with multiple profiles a cohesive platform to distribute their complete online presence with authority. The resulting username database is fully independent of any one network, but supportive of all. For a casual user, it's a discovery and reference site for finding all handles of an entity of interest; for a social user, it's a standardizing tool for sharing all of his handles; for an enterprise, it's a strategic needle-mover for total brand and message visibility.