Management blogs

My favorite weblog concerning management issues is the one from Christoph C. Cemper which gets updated fairly often and this guy produces good content. It made me find a nice repository on management notes from a professor.
and it guided me once to Gantthead, This is a nice site for project management and they also have some nice spreadsheets and checklists and some of the articles are quite good.
I should start reading this "48 Laws of Power" book.
Just need to finish my cleanup after my long holiday.