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There would be a lot of competing interests in showing/not showing this information and legal considerations usually win.If anything, this is a strong argument for more transparency on Google's part. Otherwise, it opens them up to lawsuits because they are, in essence, refusing to do business with a person (by issuing a penalty) and refusing to disclose why they are refusing to do business with that person.
Maybe the best solution would be for Google to stop notifying violators of manual penalties and to eliminate reinclusion requests.
Or maybe just be more transparent and let site owners know what the issue is so they can fix it.
LifeinAsia -- You've shown that being persistent in pushing back can pay off. I'm happy for your success.
In other words, if the algorithm could do the full job, then manual interventions wouldn't be needed, and the manual spam team could be disbanded. The fact that a manual spam team is still needed is an admission that the algorithm still has a lot of room for improvement.
Sorry but Google's rules are not consistent and clear at all.