---- Google's Matt Cutts provides guidance on cross linking domains
netmeg - 2:21 am on Jul 18, 2013 (gmt 0)
"Why in the first place would you have 20 domains?"
I have lots more than 20 domains. My sites tend to have similar themes but concentrate on individual states. So while the overall theme may be the same, the content is specific to its location. There are multiple types of themes. There are 50 states. QED.