Paypopup.com
Mentioned this company a few times now but not really given you much of an explanation to them. So here goes :
I have been using them for probably 2 years (on and off) and have made around $400 so far from them. They offer a really easy to use system which by which all you need to do is select how often you want a popup to appear for each user and then they give you a code to paste into your page.
Although the system is very good and I highly reccommend you try it, I would like to offer a word of warning before I go any further. Yes you make money, yes it is easy BUT it is not perfect for all types of websites.
Many sites, blogs seem to be in this category, do not suit having popups and it may stop people visiting your blog. However some websites are expected to have them, they seem to be as follows :
- adult websites
- Gaming sites
- Freeware sites
There are many others but those are the most common users. If you do have a suitable site or want to know whether I think your site would fit the category then leave a comment bellow and I will pass on my thoughts.
The popups are actually pop-under, this means they appear under the open window which means they are less noticeable and more likely to be viewed fully by your visitors.
Earnings can be up to $1.80 per thousand displayed popups. so if you get 1000 visitors a day and 10,000 hits you could earn up to $18 a day (rates per country vary)
You can and in my opinion should also set a frequency cap. If a single user recieves a popup every single load this will annoy them, that is why you should set it so they only recieve a popup (while viewing your site) every X amount, I set that at 30 minutes. this leaves a good gap between popups but also leaves you with a good chance of earnings.
They also do an in page ad which covers the screen of the website and makes it the main highlight of the page, a simple click closes or views the ad. If users want to viw the ad they go to a new tab/window.
Not much more to say other than try them out, they are free so you have no risk.
PLUS no viruses are in their popups so no users have any other worries.