Martin and Ricardo: yes, democracy must be more democratic and writing about what our representatives are doing is a very good way of participating.
However, one must know what to document. You cannot simply reproduce things, without criteria. If a blogger/adopter does so, he is not actually holding the politicians accountable. Sometimes the blogger is even playing the politician game. I saw it myself: some bloggers sometimes work as a public relations officer of the politician "adopted". It seems the blogger does not do that on bad faith; it looks like he does that because he does not know what to observe and what to write in the blog. So, he naively reproduces what the politicians office distributes.