I need to know that is there a good site or application that I can use to post to Digg.com stumble when I create a blog post. I am using friendfeed with Rss feed and twitter via feedburner and post to Fb via twitter. But cant find How to do it with digg and stumble.
Indeed. That is a great idea. As for me, I do manual posting on different sites. Also you can use Ping.fm. There's also an application where you can manage your social media sites like FB, FB page, Twitter, LinkedIn. Try Hootsuite.
In my personal experience delicious, digg and stubleupon these sites are very important in social bookmarking website and can help you a lot to get good traffic as well as fast index.
ping.fm is the way to go. its pointless to do it manually 1 by 1.save your precious time to do other things on your to-do list.
If you have Mozilla Firefox 3.6 then install Google tool bar and share in Digg and many more through sharing button.
you can use "WPsocialpipes" plugin. It's a wordpress plugin ( it's very cheap in the warrior forum ) for posting to social media sites automatically.