I ran this for about a month when it was first linked on here. It's pretty impressive. I did no performance tuning. Size of the install got a little worrying but i think there's a lot of options to adjust this and i was not ready to put this on block storage yet.
I'll probably give it another shot later down the road.
How's it better than Jackett that is scanning public trackers? Can you find something you wouldn't find otherwise? I understand the problem Bitmagnet tries to solve, but to me the problem is rather hypothetical than real.