Hello, If I have many websites that have the same IP, is it worth it to make backlinks from some of them to others? Or is it worth to buy a different IP for each domain to have a good quality backlinks? Thank you !
for back link quality, no other factors are more important, but for risk managment yes it is a good idea. i.e if google slaps one of your sites, they might slap all your other sites on the same ip, especially if your interlinking them, same webmaster tools, adsense id etc