Wow, that kind of topics lately make me feel like AdSense is no longer paying anyone. What is the real catch behind those sites? Seriously guys, I run a very crowded niche, yet I am able to get 80c-1usd per click from mostly US/Canada/UK traffic. There must be catch, I can't believe its just AdSense that pays you this too low.
6 cents per click is quite good for virtually no content site. Put some unique and worthy content (articles, reviews, etc.) and your CPC will jump to $0.15 - $0.20 CTR is also quite common for metasearch engine.
Although the earnings are low, it IS normal. I sometimes get only $0.12 for 2 clicks. Be happy that you're earning that much in a day
Yeahh you're niche is probably pretty low. A niche is the main topic or keyword that your site is based on. I usually generate around $100 per 30K impressions, so you might want to get a new niche...