Continuing the storage theme, here's a nice article about enormous storage capacity, see http://www.readwriteweb.com/solution-series/2011/05/how-big-is-a-yottabyte-infographic.php.
It contains this nice picture:
Wikipedia has an article on Yottabyte: http://en.wikipedia.org/wiki/Yottabyte.
One Yottabyte = 1 followed by 24 zeros bytes.
The Internet is estimated to contain over 500 Exabytes = 500 followed by 18 zeros, which is a drop in the ocean compared to the Yottabyte.
I would guess that a decade more with an ever expanding YouTube, the Internet will contain a Yottabyte of information.
With this perspective, it becomes clearer that the price of storage can never be low enough.
Yet another perspective reveals the humbleness of even a Yottabyte. What about a Googlebyte? That's 1 followed by 100 zeros!