Hi,
a. Yes, posting simple link, is not good idea. actually owner need to search with error on google. as like us he may get the useful information. along with link if you add more useful information. that will be accepted.
http://scn.sap.com/community/support/blog/2013/11/08/posting-links-and-the-jungle-you-end-up-in
http://scn.sap.com/thread/3448266
b. as my guess the thread which was you answered and rewarded will be basic stuff. that's why moderator may took action on it.
As per the ROE only moderators will take action on it.
Thanks