I have a 468x60 text link ad unit in the header area of my site and the CTR has been noticeably lower for several days. I took a quick look at my site from a friends computer and I noticed that the ads now have an underlined url link under the title and description. The link, for websites with long urls, extends right over the "ad choice" area and since the link is transparent both texts mix and look bad.
I don't know if it's due to the links being there or due to the overlapping issue but CTR is down significantly on that unit. I can't see how often the unit is showing up this way from home since I get 100% old style ads(targeting?) but on other computers I saw it on about 33% of page loads.
I'd like it if Google allowed me to opt out of testing.
I'd like it if Google agreed to pay me my usual if a test does this to my earnings.
I'd like to know if the underlined url links in 468x60 units are now permanent?