The number of anchor text usually depends on the website you are submitting. Various submission websites have different rules of link backs from your articles.
I use article submission for my site SEO as well, but I try to paraphrase the content. I feel that Google counts duplicate content differently to content that are worded differently. However it is not exactly duplicate content in the same domain, so Google might view it as two separate content.
Article submission. Among all the SEO techniques, article submission can be one of the most successful. Article submission generally refers to the writing of articles that are relevant to your online business and then getting them added to the popular article submission directories.