Subscribers can also increase their points at any time by buying more points from the online marketplace.

And he has worked to protect American products from being sold illegally in the online marketplace.

The formation of online marketplaces often occurs quickly in response to social or economic trends.

Listia.com is an online marketplace for trading goods between individuals by using a virtual credit system instead of real money.

ClickBank is a privately held online marketplace for digital information products.

He is also the founder of Synkio, an online marketplace for licensing music.

Notehall is an online marketplace in which college students can buy and sell class notes.

Many young lawyers, struggling to repay student loans, could benefit from an online legal marketplace.

Doing so would put the site in direct competition with the online marketplaces it seeks to serve, he said.

The company experimented with a variety of ventures, including building an online marketplace for lending to small businesses.