I have an account there for around a year or so, tho I had been inactive there for all that time. So no karma points or anything. Recently I made a decision to get involved a bit and find out whether I like it.

As of my research, some great dev related /r's include:
r/dailyprogrammer, r/learnwebdev, r/webdev, r/badcode, r/browsers, r/coding, r/css, r/design, r/developers, r/devlist, r/devops, r/frontend, r/hacking, r/hosting, r/javascript, r/learnjavascript, r/learnprogramming, r/learnwebdev, r/node, r/opensource, r/programmerhomor, r/programming, r/reactjs, r/seo, r/servers, r/softwaredevelopment, r/web_design, r/web_programming, r/webhosting, r/websecurity.

What's your experience of using Reddit? Is it worth to invest the time of gettting involved with the community there?

Maybe any other good dev related sub-reddits to follow?