RSS feed help by lancevancevw

I use RSS feed to display the last 20 on my web form on my front page. What I don't like is it will show the same post multiple times when people reply to it. What I would like it to do is only display the post one time on my front page as it's updated... (Budget: $250 - $750 USD, Jobs: CSS, HTML, Javascript, jQuery / Prototype, PHP)