If you’re a Unix person instead of e.g. a Microsoft® Windows® person, you’ve probably been annoyed by Iceweasel (or Mozilla™ Firefox®) creating a ~/Desktop directory, among others (things like ~/Downloads).
Here’s a quick fix I found somewhere in the ’net:
mkdir -p -m0700 ~/.config cat >~/.config/user-dirs.dirs <<'EOF' XDG_DESKTOP_DIR="$HOME/" XDG_DOCUMENTS_DIR="$HOME/" XDG_DOWNLOAD_DIR="$HOME/" XDG_MUSIC_DIR="$HOME/" XDG_PICTURES_DIR="$HOME/" XDG_PUBLICSHARE_DIR="$HOME/" XDG_TEMPLATES_DIR="$HOME/" XDG_VIDEOS_DIR="$HOME/" EOF
Upon next start, Iceweasel (and other XDG-compliant applications) will throw stuff into ~/ instead.