Klein sees four areas where companies will benefit from the Skype-eBay combination: hardware, software applications, voice services and personalized Skype content.

FORBES: The New Skype-EBay Ecosystem

The most recent of all the filings is one for "Nooksellers, " which appears to be for a combination in-store kiosk and online service that would offer personalized recommendations and various social networking tie-ins.

ENGADGET: blogger-avatar

The possibilities are limitless, as more and more application developers understand the power of the pen and multi-touch combination - for example, picture a unique way of sending personalized handwritten notes on Facebook, or even the fun of playing Farmville by drawing in your own crops or scarecrows.

ENGADGET: N-trig's Digital Pencil plays pen and fingertip roles, claims mastery of both