[the_mitsuhiko]

Mootools still disqualifies itself in my mind by patching around on builtins.

[tjholowaychuk]

certainly, but that's besides the point. If you look at the jQuery community vs the others, jQuery's is filled with much much more spaghetti code

[ryanflorence]

jQuery makes the DOM so dang accessible that people use it as their data, which is completely backwards. Fortunately stuff like backbone has brought back some sanity.