Another contributing factor for the company's online DVD rental success was that they could offer a much larger selection of movie titles to choose from than Blockbuster's rental outlets. But when they started to offer streaming content for free to its subscribers in 2007, it could offer no more than about 1000 movies and TV-shows, just 1% compared to its more than 100,000 different DVD titles. Yet as the popularity kept growing, the number of titles available for streaming was increasing as well and had reached 12,000 movies and shows in June 2009. One of the key things about Netflix was that it had a recommendation system known as Cinematch, which not only got viewers to remain attached to the service, by creating a switching cost, but it also brought out those movies which were underrated so that customers could view those movies too from their recommendations. This was an attribute that not only benefited Netflix but also benefited its viewers and those studios which were minor compared to others.