I think automated accounts will increase as people realise how good and cheap the Steem blockchain is. I wouldn't necessarily call them all "spam". I think there are some useful automated posts, but I agree there is a lot of Spam in this bucket. Interesting observation though they are not all bot accounts, some are just people copying and pasting from other sites. I will do a version of this report for comments at a later stage where we will see a lot more automated activity.