Question Answers and Answer Questions!
Redundant Answers - Broken Record Syndrome...
Not intending to be mean at all, but if a question posted here at WA has already been answered, there's usually no need to rephrase or reframe that same answer someone has already given.
Be Concise and Considerate
Oftentimes I've seen the same answer given over and over again, which may just overwhelm the person who has posed the question. I've even seen the same blog or training link given 3 or 4 times within a single thread!
No Need to Answer in a Rush!
In other words, when you're answering questions, just take a little time to browse through the comments thread. And by all means, if you can assist that person or have an answer that will add value to an existing answer then go for it!