Anyone used WP plugin that submits your post to multiple social media sites. Something like http://blog.socialmarker.com/wordpress-plugin/ Does it work? Which of plugins is best to promote your blog? http://pelfusion.com/tools/top-35-plugins-of-wordpress-to-share-your-blog-post/
My buddy has a great software that hits 22 sites called SocialBacklinkerPro that's worth looking into.
You can try Onlywire , it works OK but sometimes doesn't submit to sites due to errors. It used to be free but now you're gonna have to pay for it. Overall pretty decent though.
Simply add 'shareaholic' plugin to your firefox browser. Signup with ping.fm and configure the social bookmarking sites in its database. When you are ready to submit your blog post url, click 'ping.fm', log in and hit 'submit'. It will instantly posts to all the sites for which you have configured with ping.fm. There would never be an error. Simply the best way to social bookmark with just a click.
It's not a plugin but I have heard good things about SocialAdr for this type of thing. (And I have no relationship with them!)
ONlywire is most popularly used .I also used onlywire , but what rangan says is worth looking ...Firefox plugin seems fun
The onlywire plugin submits to various social bookmarking sites but I would prefer doing it manually.
If you're into wordpress.com there's "Publicize" that automatically shares your post to social networking sites like Facebook, twitter,etc. If you're on self-hosted wordpress, there's a plug-in for it.