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guess what? they all have bitmixer signature and post two-liners (and very hopeful).
so far I haven't found any completely off-topic "hope" post other than the one by namelesscoin though.
It's possible the off-topic ones are gone now - I reported a couple yesterday, and the remaining ones did seem to be at least tangentially on-topic. It's these latter ones I guess I'm curious about - can they be reported, or does being on-topic make them OK, even if they're low-value and spammy? I feel like I'm making subjective judgements, though -
I wouldn't trust me as arbiter of all things useful, so I need a second opinion before I go mad with the "report" button!
low value and/or spammy posts are not ok even if they're on-topic so report them if you think they're low-quality/spammy. though I can't guarantee that the mods will agree with you. I've reported multiple accounts for spamming low quality one-liners once and they kept on doing it (but it seems they've improved over time.).