I am working on one health/medical related website. I really want to concentrate on one site and add more and more features to it. I am not sure if one site can make much on Adsense. Some suggest you need 10-15 sites to make a reasonable earning from Adsense. Do you think this doesnt matter if you have one site or 20 sites in Adsense? Thanks in Advance.
You can get a good revenue with one site. You must have a good niche. And the health related keywords are very good paid.
i think health/medical sites can reel in big bugs. but there are already a few pretty good health/medical sites out there so if you want yours to stand out and get a lot of visitors, you would have to do something unique.
Your bound to make more in adsense if you have more sites, so long as they are well promoted, have strong niches and the ads blend in well.
I think it would be better to create just one site and add more and more content to it. Doing SEO for one site is also easier. If you add really good content, you will be making that "reasonable earning from Adsense".
For me only one site didn't work very well only after I build more than 10 sites I started earning some money. If you want to go with only one site it mast be really good site with a lot of traffic. That's my experience. Somebody else maybe has different experience so I think after some time you will be able to decide what works better for you.
In my experience, if you have 10 different sites, one of them will always be way more successful than the others, and you tend to spend your time on the one that works. Having said that, since it's difficult to know which site will work, a good strategy is to build multiple sites, not because you think all will make money, but because it's a good way to find the one that will. Experimentation is the key to being successful with Adsense.
as i understand you are working with high paying keywords. but it will be difficult to get traffic to those web sites . i suggest you to focus on the traffic