Yay! You are unbanned now. The spam filtering algorithms are not open source, but I believe they are a bit trigger-happy when it comes to brand new accounts that post a lot of comments at once. My uninformed guess is that you were caught by an overzealous filter.
>The spam filtering algorithms are not open source //
The moderation of this social network is completely opaque and often, it seems, whatever algorithms or feelings the mods use to guide them are wrong. That's probably survivor/selection bias but who's to know ...