This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
1 - What are the key features of OSGi technically (anything other than dynamic deployment of modules or is it just the main feature of that)?
2 - What kind of application(s) are better suited to use OSGi?
3 - Are there any comparisons between different OSGi implementations in the book?