it's a chrome extension that adds a sidebar onto every page and let's you drag any useful content from web pages and organize them into visual stacks

... communicated better than the image did. It is saving links? Shortcuts? Copies of the content? Does it automatically update or synchronize with the remote content? Does this mean you'll be keeping a database of whatever I put into the stack? Does it save or track passwords? What about images, and form field text, and history? If I login to Facebook, is your app going to attempt to correlate my social media account and harvest my data?

Given how intrusive some apps can be, I just personally have come to mistrust minimalist approaches like this, though I understand it's something of a standard practice. It may be an unfair bias but there you are. I'm not accusing you of anything, and it seems like a neat app, but it's not hard to feel like a sheep being led up a chute lately.