CPC (Cost-per-click) in my Adsense is very low and generated only $27.70. First I thought that Google reduces CPC rate in Adsense. But I found the two treads Do Multiple Adsense units reduce CPC ? and Use of multiple Adsense units drop your CPC that discussed about putting too many Adsense units can decrease CPC in adsense. Should I believe ? If you have any experience on that case, please leave comment here. I would appreciate.