This is a huge pet peeve of mine. Ideally, technical articles written online would include the versions of software they write about. When referring to webapps

This is a huge pet peeve of mine. Ideally, technical articles written online would include the versions of software they write about. When referring to webapps or other software with difficult to find version numbers, a prominent date at the top of the page is a workable substitute. Things written online can easily outlast what they were written about. Think of your future readers, and provide some context to your writing.