Just a small typo in "Appearance of Variables". In Ruby, @ signifies an instance variable and @@ signifies a class variable. Switching between Perl and Ruby often makes me mistype '@' for array :)
I definitely agree with the community support. PerlMonks is by far the most helpful and best moderated site I've seen. I feel that the popularity of Rails has attracted fanboys and flamers who are detrimental to Ruby's image. I try to stay out of the "I'm better than you" arguments.
What impresses me most is Ruby's metaprogramming support. I don't know that many languages, but Ruby is the first one that I've seen it so well integrated into the syntax and language. It's not cumbersome to use, and is widely used in Rails and other libraries.