I have my site rss feed what can i do with them. I heard of building blogs and bloging with them but i don't know how. And can i twitter with my rss feed?
you can post your RSS link on different RSS feed submission sites like google, msn, feedcat and so on. It will provide more traffic.
i wrote a blogpost on how rss feeds can help. you might wanna take a look http://www.seofocused.com/blog/how-rss-feed-submit-helps-seo
You can do lot many things with rss feeds like - Rss Submissions in rss directories sites for getting popularity of your blog.
You can also use sites like RSS mix to link together multiple feeds into a big feed and then submit it. I would also bookmark the RSS feed to help it get indexed by google.
rss is useful if u have regular content u can link up with alot of media and social networking sites nowadays.. so, make sure u have regular content to share with and then u try to hook up with social networking sites to get more exposure for your site hope that helps
You can display it on your website as HTML using a script like RSS2HTML http://www.feedforall.com/free-php-script.htm