From March 15th, 2013 to March 4th, 2015, 50% user give 5-star rating, 50% user give 3-star rating. for Read with Instapaper chrome extension.
Simple and easy to use. However, the more I used it, the more I realized that Instapaper was a waste of time. Instapaper tries to do two things well: organize bookmarks and make them pretty to read. However, it does both of these poorly. They force you to organize bookmarks into folders instead of tags, which most bookmarking services today agree is counterintuitive. Whether you use Firefox, Chrome, IE, Safari, your browser already allows you to sort bookmarks into folders. Tagging is more and more popular, and anyone who creates organization software without at least the option to use tagging, is going to find themselves outdated pretty quickly. As far as the making it "pretty" part, go ahead and download "Clearly" by Evernote and look at the options they give. You can choose text color, background color, font type, font size, etc etc. Instapaper only gives you four background colors, four font types, and 6 text sizes. I'd rather choose my own than choose what they've restricted me to. All in all, the problem is Instapaper, not this extension. The extension is simple, great, creative, and works well (especially considering this isn't officially made by Instapaper) but only really serves to highlight the inadequacies of Instapaper.
It's simple and no-frills, but it does exactly what it says it does, with no trouble or fuss, which is exactly what I was looking for.