If you are an expert on a particular niche topic and can assemble some of the best resources on it from around the web, then you can create topical hubs and get paid through sites like HubPages. You'll earn more dollars by creating your own niche site, though. These established topic sites already have a built-in supply of traffic and tools to make content creation easier and is one of the most profitable online business ideas today. Once you've established yourself as an expert within your niche, you'll be able to make money from a combination of ad revenue, affiliate fees, and more creative avenues like online courses, other digital products, and one-on-one coaching fees from others who want to learn directly from your expertise.
If you have pop-ups and optins on every page, I would have to think that it would be a lot harder to convince someone to link to it. Especially since the pages where you have your optins (and probably receive the most traffic) are probably the same pages that you have your best content on as well that you'd be hoping to pitch in your outreach campaign.