The site encourages visitors to send in older results.

The site encouraged users to trade actual pieces through mail, and also allowed for online battles.

I hope this site encourages you to contact me with your thoughts ideas and opinions.

The site encourages writing directly to inmates or sending a first message through its free e-mail forwarding service.

The site encourages participation urging people to "Upload a picture of yourself and show them what a criminal looks like!"

The site encourages users to share what source code or knowledge they can in order to give back to the community.

The site encourages those course creators to list related Web sites, books and videos.

The site also let shoppers scan book reviews by other readers and encouraged them to submit their own.

The site also encourages pedestrian flow by protecting people from traffic and noise.

These sites encourage groups of people to buy together at wholesale prices, essentially a Costco-like model for the online world.