

Honestly, i don’t know, but setting up some website that’s vaguely similar to reddit, is not that hard. (Building a community and maintaining tech and community is harder.) Thus, there are probably tons of reddit-like places, some bigger, some smaller.
Before reddit and facebook, there were forums (like bb boards). Some have survived (in niches). Some communities have huge Facebook groups, used with fake accounts for shitposting. Some people use twitter/bluesky/mastodon as a reddit substite.
I guess that Instagram and TikTok have most of the market in many countries. People won’t tell you how much time they spend on tiktok, but they still do.
Look, in the end, headhunters whether they freelancer or work for an agency, only work for their own wallets. They usually get paid when there’s a match, i.e. when a role gets filled or (same thing) when the candidate gets hired. To make this happen, headhunters work for both sides. Yes, usually the hiring company pays, but in a competitive market, the candidate dictates the deal.
You can totally approach a recruiter to find you a role for that suits you. if you present valuable skills and, they’ll work their network for you. Usually, you can even get this service while the other side pays the fee. You just have to find a recruiter who has both the time to work with you and a network of relevant hiring mangers.
Sure, those recruiters that message you on linked in may not be interested beyond that one role they are hired to fill; but good recruiters are excited to know about talent that’s on the market.