As seen in: http://coderkitty.sweetperceptions.com/2008/11/14/quick-fixing-blackbook-gem-for-gmail

Fix for Blackbook Gem

## Controller for Blackbook fix [ruby]
 
if (request.post?) or (!params["contact_type"].nil?)
  #get contacts
  @contacts = []
  @type = params["contact_type"]

  if ["gmail", "yahoo", "hotmail", "aol"].include?(params["contact_type"])        
    begin
      username = "#{params["username"]}@#{params["contact_type"]}.com"
      pass = "#{params["password"]}"

      @bl = Blackbook.get(:username => username, :password => pass)
      @bl.each do |item|
        unless item.blank?

          if params["contact_type"].eql?("hotmail")
            if item[:email].blank? and !item[:name][/[a-zA-Z0-9._%+-]+@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,4}/].nil?
              item[:email] = item[:name]
              item[:name] = ""
            end
          end

          @clean_email = item[:email][/[a-zA-Z0-9._%+-]+@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,4}/]
          @contacts << [item[:name], @clean_email] unless @clean_email.blank?

        end
      end

      @contacts = process_contacts unless @contacts.blank?
      flash[:warning] = nil unless flash[:warning].nil?
      #do something
    rescue Exception => ex
      flash[:warning] = ex
      #do something
    end
  end