Difference between default-initialize and value-initialize?

Possible Duplicate:
What do the following phrases mean in C++: zero-, default- and value-initialization?

I was reading this answer, so I came across the second word : value-initialize. Initially I thought this is same as default-initialize but the context hints me that I'm wrong.

So my question is :

What is the difference between default-initialize and value-initialize?

I would like to understand the difference with some examples.