Never heard of j5 Create? You can't really be blamed; the first time we saw the peripheral company's terrible website and fantastical product claims, we were half-convinced the whole company was fake. As it turns out, however, the firm's quite real and has a desirable product, too — a USB cable that lets you connect two Windows computers together to share their keyboards, mice and even transfer files nearly seamlessly. It's called the Wormhole KM Switch, and I'm using it to write these very words you see, typing on my comfortable desktop keyboard connected to my laptop screen, and vice versa whenever I feel like it. But how does the Wormhole work, and is it worth your $29.99 and change? Read on for the answers to your queries.

Update: There's an even better $40 cross-platform version that can connect Windows and OS X computers, too.