I just visited a blog connected to the only online book challenge I am participating in this year. Honestly it isn't even much of a challenge as I often read many more books than 52 (last year with an international move being the exception). I have some personal challenges, but those are personal and will not have a blog dedicated to them or a special webpage. You would have to read my blog, and I mean really read it, to even know what my personal challenge is.
And that is when I almost fell off my chair. At one blog I counted eleven challenges. Really? A Medieval challenge and a Feminist Classics challenge and an Around the World challenge. I guess if you count books toward more than one challenge you might finish. I have to say, I think that is cheating. In my opinion, if you join the 52 books in 52 weeks challenge and the 150+ challenge then you should read 202 books.
Now THAT would be a challenge!
***Update ... I found someone with 29 challenges.