Ana Lee's fashion blog is in Russian but with its insane number of HQ photographs [don't forget to click the "далее"], you won't care. For example, her two posts about Carol Alt almost certainly comprise the greatest documentation of that model's career to be found anywhere in the world.
The livejournal group ru_graphic has been showcasing great artists for years, such as soamo, desmonych, floksystar, malli-ly, olliwander, omie-yomie, zuza1, ya-ya, varka, solntsev-gleb, adul and names.
The Russian Avant-Garde Book is an online version of the MoMA exhibit, featuring 112 books originally published in Russia during the intensely creative period between 1910 and 1934, before Stalin outlawed any style but social realism. The site is separated into three chronological themes and includes examples of futurist works, constructivist graphic design, children's books, propaganda, photography and photomontage, revolutionary imagery, architecture and industry, war themes, folk art and judaica...