Here "crowdsourced" means that Jessikka Aro solicited for experiences from members of the public who have been targeted by trolls. As far as I can tell, any resulting articles have been written by journalists and have gone through the usual journalistic process.

I haven't actually read many of her articles, but my assessment is that she is not strongly biased. It is widely accepted as fact that pro-russian trolling is rampant also on the Finnish web.