The beta version (Beta 2)

In wikpedia, beta version mean:

Beta version software is likely to be useful for internal demonstrations and previews to select customers, but unstable and not yet ready for release. Some developers refer to this stage as a preview, a prototype, a technical preview (TP) or as an early access. As the second major stage in the release life cycle, following the alpha stage, it is named after the Greek letter beta, the second letter in the Greek alphabet.

Yes, we find this blog can be better.

Upgrade in Beta 2:

• Add answer list for each level
  
• Categories in sidebar
•  Adding Level 4&5, start at october,2009
  

Why Beta 2 but not 1.1 ? Because small change, much more better.
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