Using MN since the early 2000's. In those days it was a great source of information. I was a single man, and my friend (also a single man) put me on to it for the great reviews and recommendations for products of various types. We wanted to know about domestic products and the source of information was fabulous, and both he and I benefited enormously. There really wasn't anything else of its type at that time.
Didn't use it for many years, and more recently, my wife reintroduced me to it. It is way more of an abuse a discussion board now, and once one has sorted through the drivel, there are some very engaging debates and discussions. Fortunately, still a good deal of excellent product suggestions and reviews too.