I do the same thing every time...
Write the article and submit to 9 social bookmarking sites.
Spin it and use the spun content for a new wordpress,blogger,blogsome,etc article but make sure the blog is themed around your content, ie don't post an article on cats to your dog blog.
RSS the feed from your main site if you haven't already got it done to do that automatically.
Turn the article into a PDF and submit it to Scribd and DocStoc
And if I have the time, turn the article into a powerpoint slide or 2 and submit it to slideshare.
Out of all of the above, I can usually guarantee that my docstoc and scribd articles will be on G's first page in less than 3 hours and for example, I did one last night and 2 hours later, I was number 1&2 with a scribd and docstoc article which is the first time that has happened so I guess I may be building up a rep on those sites? Or I am getting better at articles!