Pure play, Brick and Clicks, Bricks and Mortar

Pure play: Companies that focus and specialize in a product/service area - only on the Internet.

Bricks and clicks: Combining the traditional way of conducting a business and using the Internet to interact with customers (Multi-Channel Retailing).

Bricks and Mortar: Companies that only have a physical presence i.e. building structure.

Pure play Vs. Bricks and Clicks: Blockbuster VS. Netflix

This link looks at an example of how Blockbuster is trying to compete with some online competitor such as Netflix in the market:
http://www.internetretailer.com/article.asp?id=21295