Hi Jitendra, Jason,
The content in the blog post that Jason referred to is actually not up to date, as indicated by Laure Cetin in her additional note at the top of the post:
May 2013 update:
SCN is now enhanced with extensive game mechanics! This is fun, this is driving engagement in the community!
Please read the updated Reputation Program Overview and the Frequently Asked Questions documents, as well as Chip Rodgers' blog.
To make it clearer, perhaps she can add an additional line that the information in the post below the note is no longer accurate when she returns from vacation. (The post was not deleted due to the bookmarks on it.)
I would recommend reading the Reputation Program Overview and the FAQ documents listed in the note. Those do have accurate, up-to-date information on the SCN reputation program and gamification. There is also SCN Gamification Known Issues.
Most importantly, please know that we are actively working to bring some form of email notifications back to SCN for leveling-up and possibly for mission achievement. So stay tuned!
Regards,
Audrey