gravatar_helper.rb

module GravatarHelper

  def gravatize(email, options={})
    default_options = {:size => 60}
    options = default_options.update(options)
    crypted_email = Digest::MD5.hexdigest(email)
    output = "http://www.gravatar.com/avatar/#{crypted_email}?s=#{options[:size]}"
    return image_tag(output)
  end

end