Yep, your personal panel would be visible to other users, so this isn't what I would recommend.
The Apple Notes app on iOS and macOS (presumably there's a similar app for Android/PC?) is a great place to jot down links you want to refer to later. You can even share directly from Safari to Notes to get a nice little link embed with a preview right in the note.
You could also consider using browser bookmarks. I know bookmarks are a little old school and most people don't use them much anymore, but every Cake conversation and post has its own bookmarkable URL, so creating browser bookmarks could work well.