Deane at Gadgetopia experimented with a new format for her Adsense ads – no borders – and discovered one of the best ways of increasing CTR:
‘If you have Google Adsense on your site, here is the best piece of advice I can give you: don’t put borders around your ads. I had a border around my skyscraper banner on the right here, so it sat in its own little box.’
This simple move made a substantial difference to CTR and no doubt a corresponding difference to overall earnings.
Of course each blog is different depending upon the overall design – but this is a tactic I use on most of my sites pretty successfully. However if you do keep in mind you might get a bit of flack from it – check out the comments on the above post and you’ll see that some are ethically opposed to it.
Found via WorkBoxers