Is the Google support team will consider my request to give second chance and make my site index again? Is there any third party can do that?
in many cases, thats very difficult and from my experience many people select to build content from old site to new site
Have you submitted your site for reconsideration? You can check Google Webmaster. They can index your site again but you would need to submit it for reconsideration and follow their recommendations.
You will spend more time repairing your site if you have been deindexed. Just move on to a new site. I would also look into an aged domain that is still in the index with PR and backlinks already to save time and money!
I know there are some who are able to get their sites indexed again, but these are probably for "minor misdemeanors". I suggest you submit your site for reconsideration as that is another option you might want to try.
Yes...remove hidden links, doorway pages, keyword stuffing, duplicate content and send a request to Google via webmaster tool. You will get a reply and your web page gets index. The process takes 15 to 30 days.
I used to periodically get penalized for some reason I didn't spot... and then, like six months later, Google would unpenalize me and my traffic would pop back up. This happened twice. Finally, I had time to look closely at site, figured I was unintentionally keyword stuffing. I removed bunch of the stuffed keywords. A few weeks later, traffic popped back up. BTW, site was www.scorporationsexplained.com and the keyword that was "stuffed" was "s corporation."
Want to get out of something that never existed? Google representatives have repeatedly announced that Sandbox phenomena is just a myth!! Now, what people assume to be the ‘Sandbox effect’ is usually a penalty slapped by Google for employing bad SEO practices...If you employ white hat SEO techniques (on-page and off-page); there is no reason why you won’t get indexed fast!
If your site gets put in the google sandbox and you don’t continue to work on it, you’ll never get out.