Hafslund SESAM – Semantic integration in practice by Lars Marius Garshol.
Lars has posted his slides from a practical implementation of semantic integration, and what he saw along the way.
I particularly liked the line:
Generally, archive systems are glorified trash cans – putting it in the archive effectively means hiding it
BTW, Lars mentions he has a paper on this project. If you are looking for publishable semantic integration content, you might want to ping him.