We had an informal investment club about 4 years back, and Supergroup was one of the first shares on the watchlist - not to buy, but just to watch, at a price of around 1000 - so ja that is a dog. I also held MCubed for a while, and then got out just in time, whew!
I once bought Glotec on a great review from one of the wonderful web analysts. It was 54c, expected to rush to 80-ish. It immediately started a plunge out of the sky and ended up at 1c before being suspended. It won the worst-share prize that year, even beating out DiData which had tried really hard.