I got the following message from the Optimisation Team in my Adsense account: Do you think I should add more link units on my site? It is just a simple 1-page mini website with one 468x60 link unit placed in a prominent position. In my opinion, if I added more link units on my site, I wouldn't earn more, as there would be more ads displayed on my site, but the cost-per-click of these ads would be lower. With just 2 ads, I'm getting just the top-paying 2 ads. What do you think? What is your experience?
its very strange that adsense team send this email while you say that its a mini-site. is it getting so much traffic that makes adsense team consider it as an important site in their database? and are you sure that the email came from adsense not a fake email?
it is just suggestion from adsense team, they always send out this kind of email you can either try on it or ignore it as you wish, it doesnt really a matter since it is just an suggestion