I'm quite surprised that you only average 80k uniques/month. With how much I see this tool being recommended throughout the SEO community, I thought it would've been a lot more.
Have other similar tools cut into your traffic?
I think this is due to the fact that in web marketing many people love to talk about tools they actually don't use (that much). By the way my traffic slightly increased over the last few months.
Cool tool! How much do you make per month through the ads?
Thanks, I prefer not to share the actual revenue but it's >1K€