Sorry but the title and post statement is totally wrong. I have a market maker bot on dec/swap.hive for almost a half year and my profits went down significantly after the market maker by hive engine/dswap team was released.

You mislead people with 50% gains from it because it is impossible with market maker on such shalow market like hive engine is. The more bots the lower income, and I can say it from my perspective as active market maker for months. The more market makers are started by people the least profit will it bring for single person. Sad but true on small markets.

You didnt also say from which market cryptomancer had the 50% gain, but it is important to know that price changes affect higly the income. It is high risk when market making pairs that can go only one way. Dec is pretty good token for mm because of almost sinusoidal price change (always 0.2-0.8, always chance for rebound).