When we launched INDA at www.developers.ie a couple of weeks ago, we integrated the .Text blog engine so that our members (most of whom were new to blogging) could have their own blogs on the site. I also created a blog there, but soon I was getting frustrated by having to cross post blog entries both on my own blog here at www.styledesign.biz and on www.developers.ie.
I wanted a simple blog aggregagtor, so that I could automatically pull my most recent posts onto the site without having to cross post. It was during my search for a suitable piece of software that I came across Minh T. Nguyen's .NET Blog Aggregator (which I blogged about previously) and decided that if there was nothing available for download, I would write my own...
Blog AGgregator 
was born!
Running stand-alone or on top of .Text B.AG pulls content from subscribed RSS feeds and presents the combined content in a sorted, categorised format. I will more than likely blog about the internal design at some point, but for now, you can see B.AG (Beta 1) in action at http://www.developers.ie/blogs/
If you would like to incorporate 
into your site... just let me know. Marcus