as far as privacy issues, it only goes as far as not wanting someone to see your info on your screen.
the info that sig shows is info contained in any communication between your browser and the server. nothing private about this info.
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien