A new Bitcoin exchange / leveraged trading service is set to launch in the coming weeks. Going by the name of "Kraken," it will be the first site to offer leveraged trading since the beleaguered Bitcoinica went offline last year. It will also be a Mt.Gox-like Bitcoin exchange.
I had the opportunity to browse the site, and it certainly looks promising. Hopefully it will be as secure as it is visually appealing.