Article Linking

hi
If i post an a article and anchor text contain the home page link and after somedays i post again a fresh article with prior anchor text i gave value to that anchor text or not.
and
can you tell me where i can put link in article in body or in author bio. which part is best.
one more thing if we give same link(url) in dirrent achor it is spam?

See original post by Bharat Bhushan