I am using Wordpress engine for my blogs. For articles I uploaded, I use pinger to invite search engines to crawl them. Currently I am using these RPC: http://rpc.pingomatic.com http://services.newsgator.com/ngws/xmlrpcping.aspx http://rpc.weblogs.com/RPC2 http://rpc.twingly.com http://rpc.reader.livedoor.com/ping http://rpc.icerocket.com:10080 http://rpc.blogrolling.com/pinger/ http://rpc.bloggerei.de/ping/ http://ping.weblogalot.com/rpc.php http://ping.syndic8.com/xmlrpc.php http://ping.namaan.net/rpc http://ping.myblog.jp http://ping.kutsulog.net/ http://ping.feedburner.com http://ping.fc2.com/ http://ping.blogs.yandex.ru/RPC2 http://ping.blo.gs/ http://hamo-search.com/ping.php http://blogsearch.google.us/ping/RPC2 http://blogsearch.google.co.uk/ping/RPC2 http://blogsearch.google.co.id/ping/RPC2 http://blogpeople.net/ping http://audiorpc.weblogs.com/RPC2 http://api.my.yahoo.co.jp/RPC2 Are they enough to to many? Please advice, thanks. Rgds, Budi