Actually its not title as you mentioned in the first post, btw this is an idea, all people don't see all things same, this is a difference we all people have.
Maybe some one else read this and posts his opinion too.. Also I thing title has effect in SEO.(in the first place, where it supposed to be in first post)
It does not affect SEO in any way shape or form. This is a visual mod, the title is still visible in the source code, which it what search engines see, not what you are looking at.
I have enabled the mod on this forum, as you can see the threaad title is no longer showing, but this is in the source code.