AOL is expected to announce the acquisition of Sphere tomorrow. Sphere is a blog content engine that launched in 2006. Terms of the deal have not been disclosed but Techcrunch and GigaOM peg the deal at around $25 million. Sphere raised $3.5 million over two rounds of funding. Sphere provides contextually relevant content tools that make connections between text, video, photos and ads. Sphere is currently integrated into over 60,000 leading sites and is live on over 2 Billion monthly article pages across the web. Sphere has a broad range of partners including A-list publishers, micro-publishers, and blogs. It is best known for their Sphere Related Content Widget but they have a broad product suite on Embedded Link applications. Congratulations to their team!