To get your brand featured on other blogs ("buying a spot" on their site), you can use marketplaces that connect brands with publishers:
: One of the largest networks that connects brands with influencers across virtually any niche. Blogger.com - Create a unique and beautiful blog easily. buy spot connect
If you need high-quality articles written for you, several "content spot" marketplaces connect businesses with expert writers: To get your brand featured on other blogs