Just a random thought. While I was looking at 'What's New' I noticed an ad at the top from VCA. I noticed that 'Random Flow Generator' was trademarked. Now I know practically nothing about how trademarks work but how did they mange to trademark a term we have been using for decades? Don't get me wrong I like VCA and I use their nozzles but somehow it seems wrong to allow anyone to trademark 'Random Flow Generator'. The idea has been around a very long time and I'm not about to add a TM symbol every time I post about the idea. VCA did not originate the concept.