I think killing the 140 character limit will severely damage Twitter and turn into a tumblr-like website. I do agree with the author on some of the technical as

I think killing the 140 character limit will severely damage Twitter and turn into a tumblr-like website. I do agree with the author on some of the technical aspects he mentioned like filtering. I'd add to that list how conversations are structured, they are a complete mess. It gets worse too if you're building a product that leverages their API.