Adfly with twitter and facebook.
1.Create A Twitter Account
Create a Twitter account based on a certain niche, maybe about baseball, or weight loss, whatever you want, I prefer to go with what interest me, like a hobby.

2. Create A Twitterfeed Account

3.Create An Adf.ly Account Adfly.com

4. Working with RSS Feeds

When you find the site you want, look for something on the page that will link you to that websites RSS feed, If you have trouble finding if they provide feeds or not, you can either go to "FIND" or "SEARCH" located in your browsers toolbar and type RSS in the search box, or enter the web site address in Google and add rss after it.
eg: gamestop.com rss
This will usually bring you to a page where you can select what rss feed you want, some sites offer multiple rss feeds so select the one you feel fits your needs.
5. Adding Your RSS Feed To TwitterFeed

For this step all you have to do is copy the url of the feed you want to use, and paste it in to twitterfeed.

Add whatever you want for the name, and in the "Blog URL or RSS Feed URL" area, copy/paste (add) the url of the rss feed you want to use.

For Example................

On the same screen click the "Advanced Settings" button and go to "shorten link through", there is a drop down box beside it, open it up and scroll to the bottom and select "Custom", Leave it empty for now and go back to Adf.ly, while logged in to adf.ly go to the top of the page and click Tools, on the tools page go to "API Documentation" and click.
api documentation copy and paste the custom feed than...

Now take your key and uid and place it in this link (replace the # with your key and uid)
http://api.adf.ly/api.php?key=################################&uid=######&domain=adf.ly&url=%@

and done.....this........