OPML, What is the point?

I have been reading a bit recently been reading about OPML. I have the following questions:

How can I use it?What can I use it for?What is it good for?

People who are talking about OPMLRobert Scoble :

• /0001011/2005/08/21.html#a10930
• /0001011/2005/07/25.html#a10752
• /0001011/2004/08/14.html#a8077

To Quote Robert:

OPML is the glue that COULD bring all these things together.

From what I have read, the article I quoted infers that in the future OPML will bring together pod casts, screen casts, photo-sharing and screen casts. I personally just can't see how it could; I don't get how it is supposed to work; I don't know who supports it or if they do support it, what they do with it.

Dave Winer

• http://support.opml.org/

Toms OPML

• 2005/08/17#gettingAbceAboutThisThing

If you have any links or references that you think might help me can you email me: paul.kinlan@gmail.com