example.rb

# controller when you post an update
Ping.notify

ping.rb

# in config/initializers/ping.rb

PING_SERVICES = ["http://rpc.technorati.com/rpc/ping", "http://blogsearch.google.com/ping/RPC2"]
PING_BLOG_NAME = 'Danish Khan\'s Blog'
PING_BLOG_URL = 'http://danishkhan.herokugarden.com'

class Ping
  def self.notify
    PING_SERVICES.each{|service|
      begin
        server = XMLRPC::Client.new2(URI.parse(service).to_s)
        result = server.call("weblogUpdates.ping", PING_BLOG_NAME, PING_BLOG_URL)
      rescue => detail
        logger.info("ping failed for server #{service} (#{detail})")
      end
    }
  end
end