Cross-linking between your own sites

[bets@betsfreebets.co]

use different IP´s, and if you have regional targeting then by all means use regional settings plus IP from the region...dont link all from the homepage, use link pages to cross link...

[raphnix]

I reckon there's no official or formal standard yet for SEO about interconnected links through websites. Only some theory where Google or any major SEs blacklist overly link farms.