I visit personal sites or individual posts on larger platforms when searching for topics.
The places I revisit are curated (in some way) sites focusing on areas of interest. Hacker News, The Verge, sub reddits, various news portals, slashdot, etc.
I'm hoping that following hashtags or similar will eventually work out.
Yeah totally agree that it produces a lot of noise. I too do checkout sites like HN, subreddits like r/cpp, r/webdev, etc periodically to discover stuff, and it really filters a lot of stuff.
Also sorting RSS feeds into multiple folders in a tree like fashion has helped me so far. I started using RSS faily recently (like 2 months), got do know of it in January when on Mastodon people were remembering of Aaron Swartz. Loved the idea of RSS and instantly got addicted to it. So yeah, might end up with a unusable feed soon since I am quite new to this thing. Let's see what happens.
> 'm hoping that following hashtags or similar will eventually work out.
Following hashtags too produces a lot of noise for me, especially on the Fediverse, subreddits work much better. Also you can just follow subreddits using RSS, which is also a nice thing to have IMO.