Hi I have written a few articles to bump rankings on a website that I own. The article url is here : Buying and selling gold article. Well any way...now that I have my article in the directory where can I post some backlinks that will stick for a longer amount of time so that I dont have to go back and add more links to the article after 4-5 months? also the article above is nofollow...is it a good practice to have both ******** and nofollow articles??