Writers/filmmakers/people who publicise their work* through their blogs/twitter accounts/facebook pages appear to use the medium less as an aggregator and more as a selective filter that lets in only the praise and keeps out the criticism.
This is only natural I suppose.
But I'm more fascinated by the phenomenon of linking to reviews at all. It assumes on the part of the consumer 1) laziness; 2) an inability to make up one's mind without help; 3) a willingness to be directed.
Also fascinated by what this says about the author**.
* Specifically, reviews. Information about availability/ readings/performances/exhibitions are different beasts.
**Here I'm distinguishing between the person who created said material -film, book, music album, painting - and the person in charge of disseminating information about it. It's when they're the same person and that things become really interesting.