Hi Nitin Jinagal,Dëv Päträ and
I would like to thank both of you for your supporting lines. I strongly feel all "Missions" have to be hidden. Then, it creates lot of curiosity in all SCN Users, which could certainly makes SCN as much precious with lots of surprises 
"Gamification" concepts are interesting but little fine tuning is required to avoid some Spam Contents.
People who experience Surprises(Bonus Points) can spread +ve Word of Mouth. This will accelerate the usage of SCN.
Hope SCN will look into this to improve.
Regards,
Suman