Install Resurface.

1. Open a Reddit chat — either the floating chat popup or the full page at reddit.com/chat/room/….
2. Hover a message — a small bookmark button appears at its bottom-left corner.
3. Click the bookmark. Pick an optional resurface date and hit Save.
4. Post comments work the same way — open any Reddit post (/r/*/comments/*) and hover a comment to save it.

Saves create a thread per (Reddit user). Everything you save for u/someone rolls up into their timeline.

1. Open a LinkedIn message — either the pop-out chat in the bottom-right of any LinkedIn page, or the full thread at linkedin.com/messaging/thread/….
2. Hover a message — a small bookmark button appears at its bottom-left corner.
3. Click the bookmark. Pick an optional resurface date and hit Save.
4. Post comments work the same way — hover a comment on the home feed (linkedin.com/feed) or on a post page (linkedin.com/feed/update/…) to save it.

Saves create a thread per (LinkedIn person). Only text messages can be saved today — reshared posts, reactions, files, and calls show a note that they can’t be saved yet.