I once worked on a SaaS product team where I rarely created wireframes unless they were exploratory compilations of concepts that came out of a design studio. Typically, designs were created on paper or white boards or I just mocked things up in Fireworks (hey, it was a long time ago!). We were using Bootstrap for the product’s front end and I had Bootstrap stencils in FW, so it was quicker to do comps than creating detailed wires and THEN do comps. Detailed interaction/functionality was captured as acceptance criteria on a story, so there was no need to “annotate wireframes.” Any UI details that needed polishing were handled via Dev/UX pairing or me just tweaking styles in the browser and sharing the tweaks with my developers. It was an awesome way of working!