http://dmm.biologists.org/content... - Bora Zivkovic

"Obviously I wouldn’t blog if I thought it were totally pointless, but I have come to believe that even the most well-intentioned scientific bloggers are probably not going to be able to revolutionize their colleagues’ relationship with the literature. In part, as we say in the excerpted passage, this is because it’s unlikely that a single individual will rarely have both the relevant expertise and the required amount of free time. But are also other reasons, the most important one being that “one size does not fit all”, e.g., any given blogger’s survey of the recent literature involves judgment calls about what is interesting and important, which may or may not correspond with the judgments that would be made by any given individual reader. - Bora Zivkovic

Ah ha ha! "For bloggers to provide an efficient and efficacious post-filter service, they would have to meet an imposing list of qualifications: sufficiently well-trained to make wise judgments about the papers most worthy of attention; sufficiently idle to have nothing better to do than read papers all day; free of idiosyncrasy or agenda that might bias their choices; and willing to work continuously for free." - The Neurocritic