Understand where people are at in the buying cycle and promote accordingly. Spend the most time sharing affiliate links where people are ready to buy. For example, you can share affiliate links on Pinterest, but most people are not on Pinterest to buy but to look. As such, focusing your affiliate marketing strategy on Pinterest might not be the best use of your time. Review posts, for example, might be better at tipping people over the line into buying.
If I have a blog that is getting 100,000 page views a month that means that I’m probably getting at least 50,000 people to the site (most blogs will do between 1.2 to 1.4 pages per session). That means I have to try and get some small percentage of those people to buy something from me if I really want to do well. If I can’t get them to buy something then (in some cases) I have ads running on the site that will make me money anyways.
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.