I always try to make relatable topics, at lease some of them each week, and I think most of the topics I write are relatively easily written about for most. I like to see people try things though, get out of their comfort zone, which is why I also try to put a few more difficult ones in.
So many people on this concept take thee easy option and don't tend to put a lot of effort into it...those are the ones I don't vote very well.