Guest Post - Indexed & Dofollow for new IOS app launch

Looking for a guest post to discuss an app which enables people join & host local house parties.

Looking to have a guest post on Buzzfeed, but also open to other suggestions with similar range of traffic and authority (e-g- Mashable, Benzinga, Crunchbase etc.)

Please do not apply if you post on Buzzfeed's community section as it's useless.

Please also provide sample of published work for reference.