A media partner for a conference is a great way to get your information out there. People who are interested in your message but not able to attend your conference will be able to read about it online and you might even reach some people who weren't interested before. There are many benefits of being a media partner for an event- it can provide a lot more exposure and publicity for you as well as the event,  to improve your relationship with other companies/organizations, and help to build your reputation as an expert on that subject matter.