rev_talk_comparison.rb

def common_words the_words
  prohibited = %w{i is about an and are as be by come de en this for from}
  the_result = the_words.gsub(/[^a-z ]/i, "").split(" ").inject(Hash.new(0)) do |hash, w|
    hash[w] += 1 if !prohibited.include?(w)
    hash
  end
  the_result.sort{ |a,b| b[1] <=> a[1] }.first(10).map{|a,b| a }.join(", ")
end

p common_words("This is some text. This is some text. Slash development costs.")

# To contrast with: http://www.pitchengine.com/brands/runrev/images/33419/PHPvsRevTalkCodeComparison.JPG