Diaspora as part of other fediverse networks (https://fediverse.party/) seems to be very trade-free. You can choose a node, where you want to register an account or even host a node by yourself. I registered on one node and saw an ad for a fundraiser by the guy who was running that node, but then I simply deleted my account and created another account on another node. In their wiki they say they want to implement that feature to be able to change the nodes later on if you registered an account already: https://wiki.diasporafoundation.org/Choosing_a_pod#Can_I_switch_to_a_different_pod_later.3F – there are no trackers and no ads, so I’d give it 5/5 blocks.