Originally Posted by st0ned

I have heard of a negative SE impact from popunders from a number of people over the years however I have always run popunders on my own network and have seen no negative effects. So my general belief is they will not have a negative impact but as most people will say "ANY changes can have an impact - whether positive or negative".

I generally try to stay within the same niche, with a mix of dating/cams/desktop strippers/etc.

Most sponsors which offer a popunder code don't work all that great.

I use my own script which rotates URLs. Or you can use something like popit (but you have to send 10% of the traffic to them).

There seems to be a working code here which I have not tried yet since mine works fine as is. This one also only seems to allow for a single URL and will not rotate between multiple.