Finally, paste the javascrippt code into your blog template. This is agnostic regarding whether you are on Livejournal, Blogger, or a MT variant. You can specify CSS class definitions for greater control over look and feel. Take a look at teh View Source on Dean Nation for how I did this if you want an example.
One last note - provide a link for your readers to BugMeNot.com so that in case any of the articles are registration-only, they can still access the content (all Washington Post articles, for example).
Hope this is helpful - please share any RSS tricks or tips you have in the comments. I'll try to post another diary later this week about using deli.cio.us tags and Flikr to categorize your content even if your blog doesn't support categories (such as all blogger blogs), and to enhance your categories if your blog does support them. I need to actually implement it on Dean Nation, of course, before I can write about it :)
and, if you want to keep abreast of the latest Dean, Obama, or Hillary 2008 news headlines, Dean Nation is now your one-shot stop :)