Again another one very easy to do.
I like using feedburner.com as there is no limit (max 5 on twiterfeed.com) on updates however feedburner offer only post to twitter at the moment.
Ok let start
Check your domain address with /feed at the end ie
http://peeklocal.com/feed if you are NOT seeing anything feeds then you need to enable PERMALINKS.
In admin menu-->general settings--> permalinks-->CHECK friendly URLS.
If you do not want to enanle friendly urls then your site feed url is
http://peeklocal.com/index.php?page=search&sFeed=rss1- go to
http://twitterfeed.com register and sign in.
2- CREATER NEW FEED
3- Name yor feed and enter your site address ending with /feed eg
http://peeklocal.com/feed4- click on ADVANCE settings on the bottom left.
5- Choose update frequency, 1-5 post update, Post content or title or both.
6- Choose tinyurl as short url(other needs API or registrations etc)
7- Post sorting select Pubdate.
8- Click on Continue to step 2 on the bottom
9- Your feed has been created now you should see
Available Services
Twitter
Statusnet
Hellotxt
Facebook
Linkedin
click on any of them to autheticate the accounts and you are good to go.
check my links in signature to see demos for "facebook" I am using feedburner for twitter.