The blog “Design Oberserver” was founded by heavy-weight designers, writers and thinkers from Pentagram: Michael Bierut, Jessica Helfand and Rick Poynor among others. It is one of the best places to look for intelligent discourse on graphical design and visual culture.
Another very good resource is “SpeakUp”, which is very much like Design Obeserver but with a slightly more humorous/light hearted angle to the articles. Here every designer can discuss what’s on their minds. If you want to have a small idea of how designers think you must check these blogs out and contribute, because without critical thought we will only amass mediocre solutions.
And talking about critical thought check these links out: