My PR was reduced from 4 to 0, why?

your backlinks probably have decreased or you lose some of it so your PR also decreases. - this should be the reason to it .

 

Page Rank is about Backlinks so when you gain a PR increase, there's more backlinks you got.
If you got a PR decrease, you certainly loose backlinks.

 

because it was given to me...comeon we all know that is algo based you will get it back just add some backlinks

 

Ya this might be happened to your site, Just send reconsideration mail to Google from Google webmaster tools. But any how it will take 2 to 4 4 months to re gain the PR 4 .

 

You can only regain it back if you made good quality backlinks before the next Page Rank update.

 

My other site dropped a notch from PR 4 down to PR3. I don't know what went wrong because that site had all outgoing links coded with nofollow. On the good news, my other site which has a PR 0 went up to a PR 2.

 

pr does not really mean much , i dont think its penalty - part of google dance imo

 

your site is penalized by google and its Penalty Level: tot. 10 points (0 min. - 10 max.)

 

i have tried many ways to recover the PR, including resubmit sitemaps
and there is some good trends for recovering the PR
The site of the page is increasing

 

May be you have some bad links or broken links ,I have some good links and if you like,please PM me.

 

Google is doing something this April just bear with them they are going through maintainence.

 

Yea they are going through some restructure. Give it a few more weeks and then see how it is again.

 

it google was be angry ??

 

did you have play PTR ?

 

Resubmitting sitemap doesn't make any help in regaining your PR.
PR is all about Quality Backlinks. Make some backlinks and you will surely regain your PR back.

 

No, there is no penalty on your domain but if really your website page rank drops , then it will be a critical issue , you should wait but keep working , and i found a new article directory . thanks !!

 

Either all the sites linking to you have took their link of, or Google thinks that you are selling links for Page rank.

 

I think it's the other way around. Buying links to get Page Rank.

 

We,, yes its very common in SEO that some times, the page rank of your site increases while some times it decreases so all you need is to focus at your activities so that you can get some very good and static page rank for the long time...

 

Hi,
it s sad that your PR got reduced..
but perhaps it's bcoz of a few bad techniques you must have followed such as keyword stuffing and all..
take a look at this article, you might find it useful
http://www.seositecheckup.com/articles/11