Wordpress Code Optimization

[Cyber Fucker]

I have some noob question. I have noticed that by every post goes such comment code

			<!--
					<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
	    xmlns:dc="http://purl.org/dc/elements/1.1/"
	    xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">
		<rdf:Description rdf:about="xxx"
    dc:identifier="xxx"
    dc:title="xxx"
    trackback:ping="xxx" />
</rdf:RDF>				-->

and my quetion is - Is that necessary? Can I delete it?
If I for example I delete

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
	    xmlns:dc="http://purl.org/dc/elements/1.1/"
	    xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">

(I think this is in comment-functions.php) will my site still work normally ?
Sorry if this is a stupid question.

[Cyber Fucker]

bump, do that links have any functions ? or is that only some info ?

[Bozena X]

I don't know, but why not set up a dummy wordpress account and see wut happens.

[Cyber Fucker]

Well, actually I did a try and I did't notice anything wrong. But I'm not expert. I'm stupid newbie. So, I would like to be sure that this thing is not important.

[scouser]

Leave it in. Unless you are on an uber buget host or very very very very high traffic blog (in which case WP probably isn't for you... ;) ), having it in should make no difference, and it provides the urls for other sites to send trackbacks to you (i believe).
Leave it in to help with networking between other blog sites tbh.