The 2008 TDWI Salary, Roles, and Responsibilities Report TDWI survey is a very interesting report that gives us some more insight in the way BI business now a days, although it’s very US specific for us Europeans still very interesting.
Download it here: http://download.101com.com/pub/TDWI/Files/TDWI_SS08_web.pdf
A great article about the report with more insights: DW SALARIES REMAIN STRONG