Excellent questions and a great discussion, @MaV! Thank you for starting! I figured I'd share a few thoughts of my own if you don't mind.
MaV How comfortable are you with that?
Very uncomfortable, but that's the world we live in. All we can do is learn how to adapt and use it to our own advantage.
MaV Do you feel, like me, that the constant self-advertising and the constant demand for exposure are hard to adhere to?
I wouldn't say that it's hard. It just requires practice and a plan. It's just like any other aspect of running your business. ;
MaV How dependent are you of your social profiles when it comes to getting clients?
They don't come directly from them, but my paranoia tells me that they're probably looking me up, so having active profiles helps. They work as a credibility of sorts. I'm here. I'm not hiding. I'm sharing things and stuff. I have a growing following that probably means that I can be trusted. At least that's how I see it. I may be very wrong about this one, though.
MaV Do you give everyone your Facebook, Twitter, Instagram, Google+ WhatEverElse links, or only job-related ones, like Academia.edu, LinkedIn, Proz, and things like that?
Pretty much anyone can Google Dmitry Kornyukhov and find all of my networks, so I don't really keep them private or secrete.
RenataFTorres Has anybody here developed a digital marketing strategy and has it been working out for you?
Great question @RenataFTorres! My strategy so far was having a website (I recently re-designed mine: https://videogamestranslator.com/), having social media presence, blogging and direct emails to clients in my niche).
Of course, I have to deal with a ton of rejection, but there are clients who are actually impressed by my website and my overall online presence that they're happy to work with me.