hi to all webmaster! :D

how can i say that im successful in my SEO strategy if i just have small targeting community?
how to measuring & tracking success of your SEO strategy?
how to compare my ranking to others?

There is no matter that we have small targeting community. Our SEO goal does matter, if we achieved that goal means we got success in SEO strategy. If we have SEO goal to rank our website on first page in Google search engine for a keyword and our site ranked on first page means we are successful.

First of all set SEO goal then check that you are going to near of that goal or not.

You can compare your website ranking with others manually or by using some websites, which are dedicated for this task.

ahh! i see your point. thanks!
do you have well known site for compare ranking?

I am also agree with KristinaRoy's views.