Hi! I am a little confused. I have read that if you do a search for site:www.example.com in google and nothing shows, it's because it must be banned. Is it true? which other way do I have for checking it? When I see people selling domains in the domain section, and I do a site:... search on google, and nothing shows, I get afraid maybe it's banned so I do not purchase. Also, when I see people selling aged domains and nothing shows on google, or in waybackmachine, I also do not buy. Am I doing the right thing, or are there better ways to know if that aged domain is banned or not? Thanks!
Brand new or undeveloped websites don't show up in Google. Most domains for sale here don't come with a website, google doesn't index them because there's nothing to index. When you search for the domain name of a developed website that's been in service for several months/years and has traffic and they're not in google, that's when you should be concerned.
And what if there's a domain that is aged, and at waybackmachine shows it had a website like 2 years ago but not on 2008-2009 and does not appear on google? Does it mean it got deindexed cause it has no content, or may it be banned? Also, what is the difference between buying a dropped and a non-dropped domain, that's aged?
Yes, if Google can't find your website or the content (404) long enough it will fall off the face of the earth. I wouldn't be concerned about a site with no content for 2 years not showing up in Google. Do you mean like: Domain A: Regged in 1998, Dropped in 2001, Regged again in 2001 Domain B: Regged in 2001 Both 8 years old but 1 dropped before? I don't think there's any difference. If you mean like: Domain A: Regged in 1999 Dropped in 2009, Regged again in 2009 Domain B: Regged in 1999, never dropped Then there's a big difference, a domain resets its "age" when it drops.
So the only reason to buy an aged domain would be, if it was never dropped, or if somehow, although it's been a while since it was dropped, there are still a lot of backlinks, pointing to it, right? Buying a domain that was created in 2000, then other people took it at 2005, and and dropped it in 2006, would not be worthy.