"Longlegs."NEONIndie films like "Longlegs" and "Thelma" are thriving despite Hollywood's challenges.A strong box office and diverse audience targeting have boosted indie movie success.Increased film financing and innovative distribution methods are aiding indie growth, too.Despite all the doom and gloom in Hollywood, there's optimism coming from a surprising place: indie films.A strong box office this year has buoyed films like Neon's "Longlegs" and "Cuckoo" in the horror genre, which is particularly popular with young people (and best watched in a communal setting).