Saying "It can or should be answered" is not the same thing as saying "Good question".
How do I optimize my disk performance?
vs
How do I install and use flashcache/bcache to cache HDD to SSD?How do I install and use flashcache/bcache to cache HDD to SSD?
I might answer the first, but I would and did upvote the second.
An additional note after some discussion in comments is that some voters in an attempt to "keep it fair" don't vote on anything they answer.
