According to me somewhere this point system and thumb up system acts as a motivational factor for a new member and ultimately shifts his/her mind and efforts towards contribution and sharing. Some of the examples behind this thinking are:
1. Ankur Garg
2. Maninder Singh
3. Rahul Bansal
4. Harshit Agarwal
5. Manish Sharma and many more.
However I should not comment about others except myself but sincerely hope that somewhere they got motivated by this system. All I can share with you all is when Ms. Deepshikha gave me first thumb up it was a big motivational moment for me and the rest is history.
Regards