When you write articles and submit them on the web to increase your link popularity, mostly they are displayed on dynamic web pages. I think the effect of these links really need to be questioned. http://www.printcountry.com
They will get devalued by Google in the next update. Ever since Matt Cutts posted on his blog hat text link ads and reciprocal links are not good links, but article links are (or something similar o this) there have been millions of aricles and aricle websites poppin up with cheap content written solely for linkpopularity.
You can use them, but they will have little effect in the near future. IMHO.