Yahoo! Research has a post on SIGIR 2008, including a list of papers from Yahoo! presented at the conference.
Prabhakar Raghavan gave a talk, New Sciences for a New Web at the Infocomm Development Authority (IDA) of Singapore.
They also celebrated the release of Raghavan's new book: Introduction to Information Retrieval. The website now has a new PDF for online reading with hyperlinks.