The key is, if you made those optimization the natural way. Your site might be treated as new one too, that usually ranks immediately then drop...
Google is very strict with buying links, you should say buying traffic and to be safe for both parties, the seller should implement "nofollow"...
Content update and social media for me is the most important nowadays, especially satisfying with info and better interaction with customers are...
Google been blending and blending as many variety of result related to the topic. For it me is getting better but not applicable for every topic.
You mean Google Adwords? It is expensive and effective, but could be profitable if you studied well your ROI.
It is for Google games and applications enthusiasts.
Redirect should do the job but make sure you don't have pages with duplicate contents.
The best help of webmaster tool is its big help in indexing the sites and correction on such indexing errors.
What do you mean "Then Crash!"? Does your site literally crashed and goes offline?
Does your ranking are getting affected too? You only say your backlinks from Google are disappearing which usually happens and Google intently not...
Maybe ask some of those developers.
This happen many times, all you can do it update your details and use the proper one on strong backlinks.
It is for application and game enthusiasts, they have good list of games and applications there.
Know your capacity and resources if you could produce and exceed what those top rankings sites have when it terms in on-page and off-page factors.
Review your links and see which are probably getting flagged.
Separate names with a comma.
