As September 2010, Pinyadda accepts the RSS, RDF and ATOM RSS feeds.  In addition, we have a ‘catch-all’ feature that enables Pinyadda to grow with developing RSS technologies.  Currently, however, we can not import OPML (a feature we plan on including in the future).

If you are having any trouble adding a RSS feed or have any other questions, feel free to email me directy at kevin at pinyadda dot com.