Google knows that sex sells.
Sort of unrelated: I looked up the WHOIS for abc.xyz. It looks like the domain was updated at 10:48 am PDT on August 10, which is probably when it was transferred to Alphabet. It previously belonged to MarkMonitor, who serves as a middleman for domain names (and sometimes squats on domains that might be desirable).
abc.wtf was created at 2:10 pm PDT the same day. That’s some quick work by
Microsoft Anonymous Shell Company in New Zealand.
Google on published their blog post announcing Alphabet at 1:41 pm PDT.