* They look like something has gone terribly wrong with the website.
* They do not demonstrate linear thought patterns.
*They are confused and confusing.
* They are a typical, pretentious Web 2.0 gimmick.
* My eyes and head hurt when straining to read the smallest fonts.
* Half the population don't know what they are.
* Clouds are gaseous, nebulous, amorphous, opaque, and lack substance - hardly attributes that good content should take.
Okay, rant over.