Is there much point in writing many articles and submitting them to the same article sites? I guess what I'm trying to ask, is what is the value of multiple links back from the same article sites spread across a number of articles?
As far as links are comming from the different Ips they are worth to google and different sites with different reader might give some more visitors. One thing to remebers google give different weight to different links so when i say worthy to google it depends on google how much worthy they are from google robotic point of view.
Remember that the true benefit of submitting articles is that many other sites will pick up your article, not just the article site itself. Hopefully, some related content sites will be interested in what you have written and you can get a good one-way link without much effort. Just make sure to write good articles and check to make sure the sites have your links active. Most webmasters will change to a live link if you call them on it, but you have to follow-up and check your links after submitting to the article sites.
I think they are worth it. When you write an article and submit to these sites you must realize that the article you wrote will circulate around the net for a very long time. You will continue to receive traffic from it. It is an effective strategy