The good thing about Bootstrap is that it is stamped on pretty much every page of a site. Our sample index was mainly front pages so it was easy to spot. Total

The good thing about Bootstrap is that it is stamped on pretty much every page of a site. Our sample index was mainly front pages so it was easy to spot. Total size of the web is a very hard number to pin down. Verisign quote 252 million base domains worldwide across all TLD but we have some base domains in our index with over 1m sub domains.