These sort of posts are usually handled by MindlessElectron, a bot created, and managed by Mitchell. Although, it only nukes certain posts that fit the criteria, and only from newbies. I assume your talking about the fake PhoenixMiner posts which have been going on for probably more than a year now. I usually leave those posts as the bot usually zaps them within a minute, as you said unless they just happen to pop up as I'm refreshing the patrol page since I can handle them before the bot does. Hopefully that doesn't cause any errors in MindlessElectron from time to time.

I did notice earlier there was a newbie account with over 200 posts than posted one, looks to be handled now. I'm not sure if these are compromised accounts or if they've just built up accounts over time, though most of the accounts are newbies who have either only posted a few lines here, and there or they are without any posts whats so ever.

There's no statistics which are released to the public, other than what can be found on the mod deletion page. You could theoretically monitor that, and get some ball park figures, though it doesn't always include every moderation action, i.e doesn't include moving threads.