This theory seems partially supported by the fact that a lot of email addresses here are on the same domains: yahoogrupos.com.br yahoogroupes.fr asdasd.r

This theory seems partially supported by the fact that a lot of email addresses here are on the same domains: yahoogrupos.com.br yahoogroupes.fr asdasd.ru blogger.com Seems like emails on these domains are much more easily viewable/leakable/indexable than normal personal email addresses? EDIT: Googling one of the discovered gmail address revealed a Facebook email (with 'bcode') being auto-blogged at weight-loss-information-123.blogspot.com https://encrypted.google.com/search?hl=en&q=danielsams2050%40gmail.com https://encrypted.google.com/search?hl=en&q=danielsams20... - some kind of malware maybe?