But no matter how many copies each game sells, these companies face one significant challenge: there can only be one leader.

FORBES: Connect

It is not clear how many copies it sold before HP and Palm but WebOSNation, which monitors the use of Palm smartphones, estimates it was downloaded only 84 times before it was pulled.

BBC: Chubby Checker sues HP over penis app

In any case, the iPod shuffle has proved the product's vaunted "halo effect" in that, when Apple introduced its new iPod in January, everybody stopped talking about how many copies of Halo 2 Microsoft shipped during December.

ENGADGET: Switched On: Motorola will play shuffle-bored on deck

So how many copies had Sonlight sold?

ECONOMIST: Children's literature

He ended up losing all the music he had in it, and some of these downloading services put a lot of licensing restrictions on the way you can use their music, how many copies you can make, that kind of thing.

NPR: Marketplace Report: Boosting CD Sales

There is a loss, of course there is, but it is actually, how many of those stolen copies would have paid full price if they had to?

FORBES: Business Software Alliance Gets It Wrong on Software Theft Again

Just how many clone opportunities are left in China, now that the Chinese marketplace has copies of YouTube, Amazon, Facebook, Google, LinkedIn, eBay and yes, even Wikipedia.

FORBES: What's Left To Clone In China