That's a signature I use in my posting to make people aware of two interesting projects that I work with. BOINC is a science project run by Berkeley University to use home computer's spare cycles for scientific research. Gridcoin is a cryptocurrency project that rewards BOINC project contributors for their effort. It works in a somewhat similar way to Steemit in that reward is directly related to contribution to a useful project. Googling BOINC and Gridcoin will provide you with more information.