No need for Closing this section. HYIP are a part of the Internet and cause of it's Low Transactions Cost and no Charge Back now a part of the Bitcoin network.
It's a section for No Risk , No fun. Just invest, what you don't care about to loose and with some Luck, you can even earn some Bits.
Everyone should know about the Risks this Section has, but i also has some good Chances to earn qiuck some Cash with a bit of Reading and Luck.
For excample, i use several HYIP's with Accept Bitcoin, some of them Closed very fast and i Lost money, some are still Running, and i earn quite good to Cover Lose of others.
All in All just invest, what you don't care about to loose and be happy if you earn some Bits