Links without the tab mess
Every link and redirect opens another tab, and most of them are only needed for a few seconds. Peek opens links in a small window over your current tab instead. Close it when you're done, or expand it into its own tab if it's worth keeping.
Tabs pile up
Every quick look at a link leaves another tab behind.
Peek opens it on top
Shift+click a link and it opens in a small window over your current tab.
Close it or keep it
Esc dismisses it. Open as tab expands it into its own tab.