You can constantly tweak the titles of member posts to attract better SEO traffic.
Members are prone to posting a question as quickly as possible rather than trying to craft a title which is distinctive, clearly describes the question, and is unique compared with previous questions.
Over time, search engines tend to punish communities with 50+ discussions titled “iPhone problem” or “flight“.
So the obvious solution is to tweak the titles (or nudge members to do so). You can make any title distinctive, unique, and merge related discussions into one. It’s a lot of work, but if search drives most of your traffic it usually makes sense.
But you can go beyond this too. You can add related images and videos to the solution to search up in media search results too. You can add more detailed information from elsewhere and ensure the most popular discussions are frequently updated with new information. You can add step by step bullet point information too.
Trying to attract greater search traffic is a perfectly valid goal, but if you’re going to do it…take it to the best possible level.
(p.s. a draft version of this post went out by email, sorry!).