Ruby on Rails
The Top 10 Reasons The Ruby Programming Language Sucks Courtesy:-- Presentations from vishnu.
Ruby needs no special introduction in the world of object oriented programming.
I tried delving into Ruby couple of times in the past.
The tutorials are an intensive one-day overview of the fundamental concepts of the Ruby on Rails Web programming framework, presented by the UC Berkeley RAD Lab.
Twitter seems to be having serious scalability issues, a malaise which plagued the otherwise popular service since its early days.