Complex sentence: Two months after Ebert's death, Chaz Ebert hired film and television critic Matt Zoller Seitz as editor-in-chief for the website because his IndieWire blog PressPlay shared multiple contributors with RogerEbert.com, and because both websites promoted each other's content.
Split into simpler sentences: Two months after Roger Ebert's death, Chaz Ebert hired film and television critic Matt Zoller Seitz as editor-in-chief for the website. She hired Seitz because his IndieWire blog PressPlay shared multiple contributors with RogerEbert.com, and both websites promoted each other's content.