Thank you for this excellent extension! Rated 5 out of 5 stars
I've been using Showcase for over a month. The ability to view tabs as thumbnails is absolutely priceless, but Showcase's numerous customization features are enormous bonuses.
I love being able to choose the size of my thumbnails and being able to zoom in on one in particular. The ability to view the thumbs in a tab, a floating window, or the sidebar is awesome, allowing users to toggle between viewing modes according to preference.
Can't say enough, so THANK YOU! (Sorry about my unwieldy comment, but we cannot add page breaks).