Twitterfeed.com is not currently functioning with ping.fm which is how I posted all of my data from RSS feeds on my sites to the various social networks. Are there any other services out there that do this?
I’ve switched now… I use HootSuite.com - by far the best!
yes i also use Twitterfeed.com it is very best to submit rss feeds 
I use TF with my WP blogs feeds. And it works fine. You can try dlvr.it
Hootsuite.com is definitely a good site. You can avail it.