Foafpress is an open-source PHP web application and presentation engine for RDF data stored in files, e.g. your FOAF profile. It allows you to aggregate and publish data from multiple web sources via Linked Data.
The application can read RDFXML, Turtle + N-Triple files and supports automatic content negotiation, currently for RDFXML, Turtle, N-Triple, HTML and RSS.
There are ready-to-use templates and controllers for foaf:Person and foaf:Group.
It can create a merged activity stream from Atom/RSS feed resources, render Twitter and Identi.ca statuses including @account, URLs and #hashtag links and has icons for ~35 social websites (like Twitter, Youtube, Facebook).