The answer is obvious for many people: find and preserve the people adding substantial content to forums and you have the best forum site that Google can provide for the said niche.
But in today’s world, this isn’t enough. Your web neighbourhood — including member links to outside websites — are now a factor. Trusting members to put up quality backlinks can be difficult for most forums.
But here are two ways to elevate your backlinks.
Introduce a Guest Writer
Introduce someone who could begin an interesting thread where the experts in your forum could respond.
This someone must know how to arouse and manage a meaningful debate complete with proper citations of experiments. If your forum members cite to their blogs for evidence, make sure to check the quality of their blogs: i.e. if the topics are relevant to yours and if proper fact-finding practices have been used.
Look at Other Forums
The easiest solution is to look at other forums and see if they have the same topic being discussed hotly in your own forum. Check their hottest topic and see the responses of people.
You are looking for trends in the quality of links used as citations, the data they provide and the approach to certain topics.
Make a comparison in your own forum and try to encourage the improvement of certain points to lift your backlinks quality.