What is the activity feed? What's the Activity tab on my profile?

There are two different feeds on FetLife.

Your activity feed is what you see on the home page. Its "Following" tab shows the activity of everyone you're friends with or follow, and of the groups you're in. Next to it are the "For You" and "Events" tabs. Learn more in What are the tabs in my activity feed?

The Activity tab on a profile shows what that member has been doing themselves, like posting pictures, videos, writings, and status updates, or commenting on and loving posts. You can filter it by "All Posts", "Groups", "Statuses", "Pictures", "Videos", "Writings", "AMA", "Audio", or "Wall Posts".

The Activity tab on your own profile is also where you can post a status update, and on other members' profiles it's where you can write on their wall.