http://sewing.patternreview.com/ is great for looking up reviews of patterns. You can just type in pattern numbers or names in that box in the upper left column (for example, if I want to look up Simplicity 2372, I can just enter 2372 in the search box and it comes up with everything with that number) and find all sorts of reviews and pictures from people who have sewn it up.
It's a little trickier to find reviews from Ottobre or Colette, since they don't rely so heavily on numbers. I jus type in the pattern name for Colette patterns. Also, you can just look up items by type (eg, skirts), and look at things made with certain types of fabric.
Also has reviews of sewing machines, online stores, books, and pretty much anything else to do with sewing. And has its own forum, as well as online classes, and lots of contests. And a place to organize some of your pattern stash.
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