It’s spambots creating placeholder threads for their new forum spamming campaigns.
Many of these are using dictionary spam, ask a lame question like “What is [blank]? Or the latest trend, “What is the difference between [blank] and [blank]?”
This makes it easy for the spambot operator to just create a few simple variants of the dictionary or Wikipedia content into the campaign and deliver canned responses loaded with the spam payload for their forum spambot campaign. It’s all about spamming forums.
Sad, but that seems users have been discouraged from active participation in discussions. The artificial threads created by bots are gradually replacing all the real users here.