Are you using Google Alerts (or any other brand monitoring tools) for affiliate recruitment? They can be truly great, as they are always up-to-date. So, your recruitment email, when coming as a reaction to something newly-written online, will generally have better chances of catching the attention of your prospective affiliate.
If, for example, you are an advertiser in the Auto Insurance vertical, monitoring mentions of such key phrases as “auto insurance” and “car insurance” will not only help you keep your finger on the pulse of the industry, but also assist you in identifying new prospective affiliates.
In the above screenshot you can see how easy it is to set up real time Google Alerts notifications to come to you in the email every time someone blogs about “car insurance”. It is also that easy to monitor other landscapes (news websites, videos, etc) or set up a broader all-encompassing monitoring.
Give it a try, automating what must be automated.