Pay Per Impression (PPI) is a very interesting webmaster gain method, although there are currently few internet sites that allow you to take advantage of this opportunity.
This mode is very similar to that of PPC and as in that case you need to place banner ads on your internet site in order to make money.
In Pay Per Impression, however, the gain comes from the views that these advertisements will receive (no click, record, sales ... ONLY WHEN THE PAGE IS VIEWED!).
Payment is made every 1000 views (CPM = Cost per thousand) and generally costs 0.50 / 0.80 € CMP.
This is a very important method of earning you because you have a very popular site, you can do it on a nice cuddle (a good quality and popular site receives an average of 6,000/7,000 visits a day, then multiplying the CPM for 6/7 times gets a daily gain of 3.50 / 4.00 € with virtually no effort!).
Do not bother the website with banner ads that serve little, because in addition to being annoying to the visitor they do not lead to gains. Generally, PPI sites only pay for any display from the same IP Inputs, so a page with 5 different banners on the same Pay Per Impression site will count only one visit!
IMPORTANT!
Very often you can not place sites with Pay Per Impression banners in autosurf or exchange visits. Read the terms of the regulation first before participating in the business.