I almost always opt for the linking code with no pop-ups. I hate when they get out of hand, and never buy anything that's advertised that way, and I don't want to do that to my surfers, even if I don't make as much.
I've been trying to decide if surfers remember sites that are clear of pop-ups and general bullshit, and return to them more. It would be a good experiment to find out.
__________________
|