i have only read the title and synopsis, but weighing the professional value of personal microblogging platforms seems misguided , i wonder what the breakdown would be if linkedin (the "professional" microblogging platform, even as awful as it may be) were included , i would wager that it would be the winner. nevermind that "following academics" is something that sounds better than it actually is and reduces the individual to their profession. a more interesting question is where the dilettantes frequent