The Huffington Post has acquired its first company in a small cash deal, and it is not another blog or media site, but a pure technology startup called Adaptive Semantics. The two-person startup provides a semantic analysis engine (aka JuLiA) already used by the Huffington Post to help moderate the 100,000 comments published on the blog every day. Prior to the acquisition, the Huffington Post was already Adaptive Semantic’s largest and only outside investor, buying a 20 percent stake in April, 2009. Adaptive Semantic’s two co-founders, Elena Haliczer and Jeff Revesz, will join Huffington Post to oversee its social news and community technology R&D. The acquisition price was not disclosed “Technology is very critical to us,” says CEO Eric Hippeau. “In this case, the technology has implications for our content. It makes moderation hyper-efficient.” With close to 3 million comments a month, the only way to moderate them is through automation tools (as well as a corp of about 30 professional human moderators).