I just try to get detail note on the keywords which were worst for me throughout the adsense use. For me it were.. Free Hosting, Free Domains. Do list your worst keywords.
And how exactly were they bad, how much peer click on average? I can't believe that these keywords are bad... Everything above 0.30$ is good
My personal experience for the keyword you did mentioned above it not very bad keyword. Sometimes it can give you high paying keyword.
anything entertainment is very low paying (celebs, music, etc). I have a few high traffic blogs with those niches and I am getting an average of 8 cents a click. I also have a niche in politics and another in real estate/money and I am getting around 45 cents a click.
tv and movie as well. I find they have some of the worst cpc. Everyone underbids each other, and the highest adwords bidders who dominate have really low quality sites that reflect poorly. And repeat visitors (that actually click ads) don't take favourably. I've seen a lot of those JohnQ and web Satellite services that come up for sites on tv, video or entertainment sites/blogs - they have a low conversion rate and even though the bidding is quite fierce amongst them, the cpc/ecpm for advertisers is pretty bad. Entertainment sites are taking a hit nowadays with the recession, the industry is over-saturated so I think those are the sites affected most.
this is what the advertisers are paying for free hosting free web hosting $5.28 - $7.57 free hosting $2.35 - $3.49 free website hosting $3.94 - $5.36 Not the best, but not bad at all.
TV niche, average 5-7 cents peer click . But that doesn't stop me to earn 30$-40$ daily because of large traffic.
Hmm that depends on country if i promote my site article in local social indian networks than i get few cents per click and when i submit them on digg and reddit than i get 60 cents to $2 per click on different niche . Don't place too many ads , use only one ad box so top paying ads will displayed .
for free hosting and free domains pays 0.02$ CPM. That is worst for me. Although it depends on content too.
Our main interest must to give some information to our visitors,why you are trying to earn money from keyword content.Post the quality articles of your own interst that will help others to gain knowledge of that particlur topic.This way traffic to your site will build and you will get more clicks and more money.