This video has a few useful hints and tips about writing online reviews. It’s more about the writing than the technology, but even so it contains information about how long website-published reviews should be, and in my experience it’s pretty accurate: 500 or even 200 words tops.
But in case you don’t believe me, or you’re more of a visual learner, watch the video – it’s just over a minute long.
How To Write an Online Review
Uploaded by Howcast. - Technology reviews and science news videos.