My Startup Banking Story (mitchellh.com) - the creator of Hashicorp, effectively not wasting any energy thinking about banking when starting and growing his startup.
OS Benchmark Archive (interactivemaps.uk) - saw a post on Reddit about the strange symbol in the header image and finally discovered what it's for, so went back and took another picture of the benchmark from an earlier post. (it's a mark used by the Ordnance Survey to measure the height above sea-level of ~500000 points across the UK)