Currently, I have submit my own article to some directories .Those directories have high Page Rank. I know there are many others. Is it good idea to submit my articles to directories as many as possible? or just submit articles in a high page rank.
Just try to submit it on high PR rather than submitting it as many as possible. It will not look good in google if you do that.
If it is about publicity for your products then just submitting to few article directories wont help (PR or not) You need to get your keyword linked url seen across the net, so why worry about PR But if you are promoting your money site (like adsense oriented), then SERP ranking are more important than PR, in that case too you need to send your articles to maximum places as possible with uniqueness in each article, rather than submitting to few article sites (since PR dont bring your money but backlinks>SERP rankings>money factor does bring you money) You choose the way to go........
if your article have good popularity good content and its very useful to other so u can optimize this way so its better for u otherwise not
dont just focus on PR of the sites where you submit to. you not only get backlinks from article submission but also get traffic. more you submit, more traffic you get.