No matter what Blogger does with improving the spam classification process, they will always generate some false positive classifications . The more that they improve the classification process overall, the more obscure the false positive classifications will be. Some false positives will require intense investigation of the blogs, to identify the relationships between the blogs involved - and to prove, to Blogger Policy Review staff, that a false positive classification is present. Some time ago, in Blogger Help Forum: Get Help with an Issue , I had occasion to deal with a blog owner who was a currency trader, by profession. This person had published a cluster of blogs, where he discussed legitimate issues involved in currency trading . Currency trading is an essential part of exchange of merchandise , between different countries (the export / import business) - and the Blogger spam classification process had deleted his blogs, as suspected spam hosts.
What Blogger won't tell you