Botlist is an open source social bookmarking web application that contains a news aggregating/news/article submission site. There is also an ads listing section so that users can post personal/ad profiles. The full application itself is created with the many open libraries and languages; JRuby and J2EE's Spring framework as a middleware piece, search functionality uses the Lucene API. The web content crawler is built with Python, Erlang and Haskell. We are currently working on a Django based front-end.