Cory Doctorow
first, this book, free under creative commons
http://www.craphound.com/someone/download.php also
novels:
http://www.craphound.com/index.php?cat=5 stories:
http://www.craphound.com/index.php?cat=2 podcast:
http://www.craphound.com/index.php?cat=6
Short Yet Fantastic
the archives at the now-defunct scifiction online magazine are still available:
http://www.scifi.com/scifiction/archive.html full-length stories and novellas by silverberg, tiptree, bruce sterling, terry bisson, gardner dozois, theodore sturgeon, zelazny, octavia butler, le guin, del rey, ... this list is becoming a ludicrous who's who, so i'm going to let you go now so you can start reading.