automatic link submission in search engine [closed]

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in Google i find one open source search engine ,

This Open Source

This is my first search engine project ,

This si one open source ,

In this site,

There is a link called ADD link ,

There visitor will add his/her site ,

Then admin will look and later , admin index the user added links ,

this is basic functionality of this open source,

My doubt is How Google really fetch and produce the search result ,

Yes there is one way ,i know ,

The user add his site in Google so Google cron the contents ,

But one of my site , am not added in google but google croned , i dont 开发者_如何学编程know how it is ?

Ok come to my doubt ,

i want to add other site automatically, wihtout manual ,

really is it possible or not ,

What steps i should follow for that ?

Regards Bharanikumar

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Google has immense parks of machines that just about follow every link, so if something is linked somewhere, chances are searchbots from Google and other searchengines are going to pay you a visit. There is no chance in hell you can get a setup like them, and I doubt you have the resources to try to crawl 7 index the entire web. The specifics of their actual workings are of course secret, no need to give a competitor all your research.

What is your intention with this project?