I emailed X10 and complained about their pop up ads. They replied with a way to set a cookie to keep their ads from popping up on your screen for 30 days. It's a nifty little device to get even more hits: you have to GO TO their site in order to install the cookie! I have used Yahoo as my homepage for years, but given that I get X10 pop ups, I'm switching over to something else. Same with Weather.com. I used to look at their site all the time, but now that X10 has invaded, I'd rather turn on the tv.
Pop ups may be a way to get a lot of unintended hits, but they AREN'T the way to get warm fuzzy customers.