Bloglines, the website via which I do my blog reading, has recently introduced some web services interfaces.
Nice, simple, RESTful interfaces. Well done Bloglines!
I have one enhancement request so far: let me PUT my blogroll OPML as well as GET it. Or (even better) let me give you the URI of my blogroll OPML and you can poll it (regularly and/or on demand).
There may be broken links to media on this page. I'm still in the process of migrating them over.