Not sure how much you know about SEO, but there are a few sites that offer certain services which ALL SEOs need, but unfortunately they are quite expensive hence used mostly by agencies or big shots. I'm certain that most agencies don't use their quota and if only they could share a small tiny piece with the poor one-man-army SEO guys would be awesome! Just look at the pricing 1. ahrefs.com 2. majestic.com 3. moz.com 4. semrush.com There are a few more, but these are the main ones and used by MANY in this business. I think there is a huge market for them. So is anyone interested going after these?