It is an easy way to share reports across the organization and enables users to view advanced dashboards and analytics without having dedicated software installed on the computer. Managing structure of reporting, sharing links to entire folders or files and setting permission on those folders and files is quite straight forward. It does a decent job at showing analysis on large data sets.
Performance wise, sometimes quite slow when loading large daily datasets (3-5 min load times), have seen better optimised systems. Export to Excel 2007, again on large data sets can be quite slow. Interface looks quite a bit dated and I hope they improve on it, to make it more modern and with a touch of animations, quite helpful to have a good and beautiful presentation tool for data (something you can take straight to a board meeting).
The system is quite expensive to implement, so do take careful consideration when acquiring it. If you already have SAP driving a couple of your reporting systems then Business Objects is the way to go to have a proper integration. UI wise and performance wise it is a bit dated, so don't expect pretty and fast changing graphs on the dashboards, but still a very robust system with good features behind it. Hopefully in the near future SAP will modernise it a bit.
Monitoring of daily/monthly performance across a variety of dashboards, graphs. It also serves as a database store for large sets of data that are used in ad-hoc excel files. Helps in keeping information transparent and helps managers see their performance better on daily level.