In August, I wrote about my experience alpha-testing Business Exchange, a new service from BusinessWeek.com that lets you read, save and add news from business topics across the web.

Since then, the site has opened to the public, and the number of topics and articles has grown significantly.

Check out the two Business Exchange topic pages I started: Enterprise Wikis (37 news and 245 blog items) and Business Presentations (333 news and 769 blog items).

Now, BX has a new widget available for members to embed on blogs, websites, and social networking profiles. I’ve included the widget in this post (at right), and it’s also in the sidebar, between the Search and Popular Posts sections. Now you can keep track of the articles I submit to BX, and even submit your own!