As a new user, only 2 days old now. 

I only just found out that I could [accept an answer][1], because I curious about those green tick thing's. I did not know what they were. Now I know, but it was not immediately apparent to me.   

I think a little more info when asking a question would go a long way to solving [the problems of questions with unaccepted answers][2].  

I would add little notice below the (Notify [email] daily of any new answers) message to say so that I can come back and click the tick to accept an answer.   
or   
This Tick lets you choose / accept the answer that was most helpful. 


  [1]: http://meta.stackoverflow.com/questions/5234/how-does-accepting-an-answer-work/5235#5235
  [2]: http://meta.stackoverflow.com/q/79762/157489