Hello, 1-Just from your experience , whats the best density should be on a page for your best keyword ?! 2-what's the best accurate tool for that ? 3-Above what it is considered spam ? Share us please Thank you
Just try and make it look natural and include the keywords in the filename, title, h1 tags and you will be fine. There is no 'magic number' and its not even just related to your page. Its related to detailed analysis of your entire site as well.
Madd4 is right...there is no magical number...but there is a magical number in any given industry...it is really up to the copetition. What are they doing?
I always stick with 3-5% as well. However, lately people are going with articles with a minimum of 500 words.