an audience seems cool but the connections that really matter is that guy who sends a comment 7 years later informing you that they've made progress on the project you had to abandon, but wrote about so others could learn about it at least.
document cool stuff! share cool links! share reading that made you think or made you feel something (just be careful with the angry)
but audiences don't tend to grow with you. eventually you'll outgrow them, because they replace the ones who grew with you, with new people finding your posts, without realizing.
and you'll be glad you didn't write for them. because new people who care keep finding your old posts. and it's the people who care who end up making an impact on the larger scale, but also tend to be more reliable connections even if you don't talk much.
Sony, the "five figure pro gear" company, made a damn good USB quad-array shotgun/cardioid hybrid mic about 15 years ago, with 1-4 channel recording and standard USB 2.0 audio device class driverless interface (compatible with anything)