According to the site, Yahoo plans to charge consumers between $1 and $4 to retrieve files from a specialized database of some 25 million research documents culled from 7,100 publications, including academic periodicals. Yahoo also expects to offer a "Premium Discount Search" option of 50 documents a month for $4.95.

Seems kinda odd, but I guess researchers will be in to this? No idea how much valuable information is in that database of documents though, or if those documents are freely available outside of the Yahoo search.