As far as I understand it, these can all be written off in America under the same pretense. The only difference is the paperwork is a lot more complicated. Most of what you're describing is handled in the 1040 Schedule C
People tweeting stuff. We allow tweets from anyone.
RULES:
Mark NSFW content.
No doxxing people.
Must be a pic of the tweet or similar. No direct links to the tweet.
No international politcs
Be excellent to each other.
Provide an archived link to the tweet (or similar) being shown if it's a major celebrity, figure or any politician. If you replace the "x" at their site with xcancel (so it beomes xcancel.com), and you're not on mobile, it will save video. https://web.archive.org/save is another great option. Archive.is is no longer recommended because they remove/alter content.
If a tweet (or similar) makes a statement of fact, either mark it as "satire" in the body or provide the original source link backing up the statement
As far as I understand it, these can all be written off in America under the same pretense. The only difference is the paperwork is a lot more complicated. Most of what you're describing is handled in the 1040 Schedule C