I searched about this both in forum and on web but seems like i can't get an exact answer. Currently, I can update my facebook, twitter and blogger accounts with RSS. I was wondering if i can use the same option for all social bookmarking sites. I checked ping.fm but they dont have such an option. I would like all my social bookmark profiles to be updated everytime i post an article or news. I would appreciate if you can let me know about the sites that i can use rss feeds to update. Thanks
The new Digg.com (version 4, in beta now) coming soon will support RSS feed updates. Not sure of any others.
Check tweettwain, I am using it for a month now, it will update rss feeds to multiple accounts, both Twitter and Facebook. Cons-supports only one account in the free version, it is a desktop application, it must be running in your desktop or server. There are many features like auto-reply by which actually you can automate your account! Try and let me know if this is what you are looking for.