Multiple domains with just one host

I have reseller package and its not really issue. However some SEO guru suggest that one should not do this practice if they want to cross link their sites.

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If you want to keep all the sites on different IPs then it might not be a good idea to have the sites hosted with the same account.

here i have a question guys
what happen if some one have the same web site hosted in different
ip(hosters) and points the same domain name to each one of them?

I don't think it would be an issue unless you are are sharing the server with a high traffic site that need dedicated bandwidth or any commercial site where your living depends on it.
If they are normal sites (blogs, forums etc), you may use shared hosting that allows unlimited add-on domains. But limit the number of domains you host on a server to around 5 or max 10 (depending on their bandwidth and other resource usage).

And how can you host the same site on two hostings? It is impossible, you can have only one dns configuration per domain

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we have 3 domains in one hosting. there seems to be no problem until now. after all, we don't upload so much. the problem will be if there is too much content. but you can pre-empt it by getting a bigger hosting package/

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