Tangents Reviews is a pretty straightforward webcomics blog, with reviews stretching back to 2005, providing good story and art critiques of a wide variety of strips. Just yesterday, Howard dissected in a couple of paragraphs the classic drawbacks to being able to either read minds or tell the future. He uses a lot of sample artwork from the comics he reviews (something which I’m wondering about doing myself-I may have to see if I can contact him and ask about the online conventions of doing so) to illustrate the different styles and qualities of the authors he features.
Howard also posts some of his own fiction work (not comics, though) and overall makes it very clean and professional. I like it.