Conversation so far:
What reality TV did Kim Kardashian do in 2007?
In 2007, Kim Kardashian and her family began to appear in the E! reality television series Keeping Up with the Kardashians
What is Keeping up with the Kardashians about?
The show Keeping up with the Kardashians focuses on the personal and professional lives of the Kardashian–Jenner blended family.
What kind of ratings did the show Keeping up with the Kardashians have from 2007 to 2009?
Despite the negative reviews, Keeping Up with the Kardashians has attracted high viewership ratings, becoming one of the network's most successful shows and winning several audience awards.
What are some of the spin-offs of Keeping up with the Kardashians?
Spin-offs of Keeping up with the Kardashians include Kourtney and Kim Take Miami, Kourtney and Kim Take New York, Khloé & Lamar, and Kourtney and Khloé Take The Hamptons.
How successful were the spinoffs of Keeping up with the Kardashians  including Kourtney and Kim Take Miami?
the first episode of Kourtney and Kim Take Miami brought in 2.7 million total viewers and then became the most-watched show on the network since 2002.

Question: Why was KUWTK considered to be a breakthrough with reality tv?
Self-contained rewrite: Why was Keeping Up With The Kardashians considered to be a breakthrough with reality tv?