During Episode 58 of Semantic Mastery’s Hump Day Hangout, one question asked was about the number of allowed subdomains for SERP Shaker/ATM sites in the IFTTT network. The participant was also asking about its potential impact on indexing. The exact question was: For Serp Shaker/ATM type of sites, how many subs/domain is safe? Is building 10 subs per domain too many? Does having more subs effect the indexing??