I want to rewrite my "weak" content,but should i change url's to recover?

[iisark]

Hi,
My site was "hit" from Google algorithm and all my rankings has disappeared (pretty sure that this is content issue,not a link penalty).I got advices in google forums that i should rewrite my pages content ( because many sites has copied my content )
But i'm not sure what to do with page url's?Should i rewrite them also?
For example: mysite.com/product to become mysite.com/product1 ?
I'm asking this because whether or not content is rewrited google will see exact same pages if i keep old url's?

[rickeliason]

There is no need to re-write your URLs, although having appropriate keywords within them could be a small benefit. IF you do this, make sure you redirect your old pages.

Based on the above, Google has de-indexed your pages because they offer little value to anyone and therefore are not worthy of ranking/keeping in the index. Ask yourself, do those pages have a reason to exist? If not, remove or improve. (Remember, content doesn't necessarily have to be all words, it can have images, videos, quotes, polls, slideshows, data-visualizations like graphs etc)

Once you have got them to a standard you believe is worthy of being included, use Webmaster Tools (Health > Fetch as Googlebot) to recrawl your pages and they should start being indexed.

I hope that helps
Rick

[realityhack]

As pointed out above. The real question is what should be on your site.
If your approach is:
I want ad-sense money
Therefore:
Content

Your site will likely suck. If your old content sucked... 'rewriting it' won't make it any better for the user. And Google will eventually figure that out.

Try:
I have an idea for an amazing site about X
I have lots of ideas for what people will want to see and read
I need to pay for this somehow
Therefore:
I will run some ads once I have a great site up

[PathwayIns]

There is no need to re-write your URLs, although having appropriate keywords within them could be a small benefit. IF you do this, make sure you redirect your old pages.

Based on the above, Google has de-indexed your pages because they offer little value to anyone and therefore are not worthy of ranking/keeping in the index. Ask yourself, do those pages have a reason to exist? If not, remove or improve. (Remember, content doesn't necessarily have to be all words, it can have images, videos, quotes, polls, slideshows, data-visualizations like graphs etc)

Once you have got them to a standard you believe is worthy of being included, use Webmaster Tools (Health > Fetch as Googlebot) to recrawl your pages and they should start being indexed.

I hope that helps
Rick

Is it possible to simply have been 'moved down' in SERP vs being de-indexed?

Share your URL with me privately, I will check or your URL to determine Whether not you have been de-indexed or simply moved down in the search engine results page.