Dawn Ostroff is the President of Entertainment of The CW Television Network.

In a recent interview with The Hollywood Reporter, she talked about the future of various shows, including a possible spin-off of The Vampire Diaries. Excerpts from the conversation are below:

Why has The Vampire Diaries been so successful? Great writing, great casting, a topic that's in the zeitgeist and a known franchise is always what we look for. It's the perfect example of the kind of qualities we stress in every show we pick up.

Might there be a spin-off? Hopefully in a few years.

Will One Tree Hill be renewed? We're encouraged. We think [Creator] Mark Schwahn has done a great job with the show. The fans are the most loyal and dedicated I think I've ever seen. They have some 1.6 million fans on Facebook. Creatively, we feel the show is in a really good place.

On low ratings for Gossip Girl and 90210: I wouldn't say they haven't done as well. You have to realize that you have a lot of people time-shifting our shows and watching in different ways. Mondays have been particularly tough this year -- it has become more competitive. 90210 creatively is light years away from where it was last year. Sometimes that show is watched more on DVR than live.

Will Smallville remain on Fridays next season? Viewers have not only followed it, but have endorsed the show creatively. I think it's too early too tell [where it will go], but it's been doing well on Fridays.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.