Jena 2 Inference Support is a nice introduction to the inference engines provided by the Jena package. Besides standardized reasoning for RDF and a subset of OWL/Lite and OWL/All ontologies, it also provides the mechanisms for creating your own rule-based inference engine using the generic rule-based inference also provided.
I am currently working on an open source project (do not ask me which since it will surface soon, and I should not talk much about it till it does ;)) that required to provide web access to apps, services, and contents. From my days fighting with Mulgara descriptors I remembered that Jetty (full-featured web server implemented entirely in Java) could be embedded into applications to provide such services. It has been two months now since I started using, and it is a nice, shiny, and slick piece of software. I used Tomcat for most of my stuff, but Jetty is definitely and amazing alternative Below I just pasted one of the ways you can embed Jetty in your app. ...
Google Notebook has a pretty cool add-on for Firefox. It allows you to clip, and organize information from across the web in a single online location that’s accessible from any computer.
SURFACE 51 is a Urbana-Champaign graphic and web design company. You can check out their portfolio here.
Via wpmudev, I run into a huge pack of themes for Wordpress. Kumara Sastry also have a nice collection of his favorites.