Ok. So... bad day for me. I have this site. 140.000 visitors per month blog. 600 articles on tech/computers. 4 years old. Worked very hard on it. Three months ago i got an ad service to post some banners, just to pay for server costs. Made $400 a month. Cool! Short story - today I get DE-INDEXED from google because of "sneaky mobile redirects". Lost 80% of my traffic. Devastating. Anyway, I need some help from you honest folk. I want some ad services which are legit so this doesn't happen again. The ad service I'm using now seemed ok, I read reviews and all, so I thought i was safe. I contacted them, and I'm still waiting for a reply. I'd like some suggestions on reliable, honest banner ad services. I can't use google adsense because I got some vintage software links on my site from the 1990s, so it's technically against their rules. Thanks
First you should contact a programmer to solve mobile related issues as desktop traffic will continue to decline worldwide with smartphones is the trend for internet browsing.
My suggestion is to run your own ads. As far as getting de-indexed im not sure what to do about that, but that sucks donkey balls. Instead of paying for banner ads, try your own CPA offer or other ad. If you find an offer, or preferably a few that are at least semi-targeted to your niche, which you said was a tech blog if im not mistaken, and put your own ads with your own affiliate link, you will be doing the same thing that the ad network does just cutting out the middleman. Im not saying its guaranteed to work, which is one downside since banner ad networks pay per impression, but surely you could easily make more than 500 a month, but then again now your traffic is less.