I'm a student from Saint-Petersburg (Russia). In November 2010 I was preparing for my TOEFL exam. Resources used by me for test preparation include British National Corpus, Cambridge Advanced Learner's dictionary, wiktionary.org, free part of official materials from here and here, anki (to learn new words, my current rate is about 60 words/day during the days completely devoted to enhancing my vocabulary). Recently I've passed my GRE (320 on verbal).
Now I'm in US and I continue to learn English. I've added tradukka to my list of resources.