Obviously

“These are all fundamental aspects of Twitter, and they have been mangled. And these items do not even get into the more technical issues with Twitter’s API implementation, which I could write another blog post about. Or about how Twitter took a vibrant ecosystem full of capable developers excited about their platform that other companies can only dream about, and flushed it down the toilet.”

“From top to bottom Twitter has made product mistake after product mistake, fundamental and obvious mistakes that have significantly confused and detracted from the simplicity of the service, for little or no gain. The DickBar is just yet another of these, not some existential struggle for monetization.” – Eric Woodward

also

“In case it isn’t obvious, Twitter is a morass of inconsistent rules…” – Dave Winer