I'd say these three

• Sharing memes and clip highlights with the streamer communities I care about
• Learning new things from tech specific communities
• Troubleshooting to figure out if there's a solution someone already derived or share my own for those who end up with the same problem

This is how I've used Reddit

Some test results for this post on the current status of federation.
I posted a comment to this thread from every instance listed in the latest edited version of this post.
Latest here: https://fedia.io/m/thegoldengator/t/3393/The-Golden-Gator-on-the-Fediverse-Test-post

• Upvotes do not sync across any Kbin or Lemmy instances ⛔
• Comments do not sync across any Kbin or Lemmy instances ⛔
• Comments ONLY sync when you specifically search for the direct link to that specific comment ☑
• The initial article content gets federated ONCE across both Kbin and Lemmy ☑
• Editing the article never updates for either Lemmy or Kbin ⛔
• Searching for newly created magazines /m/ (kbin) or communities /c/ (lemmy) do not work ⛔
• Searching individual threads work ONCE across both Kbin and Lemmy ☑
• Magazines /m/ (kbin) end up in /random/ on other kbin instances ❓
• Magazines /m/ (kbin) end up in /c/ on other lemmy instances ☑
• Posting a comment on this thread from most lemmy instances do not work. The swirly loading gif loads forever ⛔

Test post link from Kbin via https://fedia.io

You're supposed to but currently federation for fedia.io is not functioning properly.

Hmm doesn't look like federation is working with KBin.social atm
Getting "404 Not found" errors when searching posts in in a magazine over there.