Hello friends, could you introduce iwriter.com a bit? I researched on the net but couldn’t find anything other than English sources. Since my English is very poor, I unfortunately couldn’t get information on how to use it. 
For example; what does the “Article purpose” section mean?
Let’s assume we have selected 3 keywords for the article to be written. We are going to have a 500-word article written; do we specify the keyword percentage to the writer?
I would really appreciate it if you could help. Enjoy the forums