Searching through websites dedicated to collect upcoming scientific conferences, I have stumbled upon a lot of similar-sounding conferences around the world (e.g., see here), all organized through the "World Academy of Science, Engineering and Technology", WASET. There is plenty of information about them on their respective websites, as the organizing committee, speakers already confirmed, etc.
This high quantity of similarly-titled conferences smells fishy. Is this some sort of scam, be it hard (they steal your money) or soft (lectures are actually given, without any real effort to look for relevant speakers, do peer-review, etc.)? Can anyone shed some light on this? Has someone here actually participated in, or even organized one of those?