I do agree with the focus on one site which ever gives you the most money. But the key is getting good contents, it is not easy to get.
You can made with one site 100$ per day,but also you can made more tha 100$ per day with 100 websites
Visit my blog bestofmoney.info : with one single hubpages account you can make 300 to 400$ per month.
I disagree strongly with focusing your efforts on 1 site. Ever heard the saying, "Safety in numbers" or "Don't put all of your eggs in 1 basket?" Does a reasonable investor put all of their money into 1 stock? Of course, not. Same rule applies here. Diversify, diversify, diversify. You need multiple sites with diversified sources of income. That way, if one site becomes de-indexed (which can and does happen for unforseen reasons) or if for whatever reason you got banned from Adsense or another program, you will still have other sites with other sources of income set-up and running. No worries scrambling around to reinvent your business model.
Thank you for all response. I think everybody has their own opinion and successful experience. Thats why, i will take all the good advise here.
Yes there is indeed some truth as - safety in numbers. I you concentrated your effort on one site - hoping to rack in $100 daily - you' better work harder and prepare for the unforeseen. I'd agree to have at least 5 sites that can make $100 daily than one that can $100.