diff --git a/_make_tags.sh b/_make_tags.sh
index 0763c64..08ac828 100644
--- a/_make_tags.sh
+++ b/_make_tags.sh
@@ -9,7 +9,7 @@ layout="posts-by-tag"
 
 for tag in `grep -h ^tags: _posts/* | sed -re 's/^tags: +\[//' -e 's/\]$//' -e 's/, /\n/g' | sort | uniq`
 do
-    tag_file="blog/tag/${tag}.html"
+    tag_file="blog/tag/${tag}.md"
     echo -n "[$tag] "
 
     if [ ! -f $tag_file ]
diff --git a/blog/tag/active-directory.html b/blog/tag/active-directory.md
similarity index 100%
rename from blog/tag/active-directory.html
rename to blog/tag/active-directory.md
diff --git a/blog/tag/apache.html b/blog/tag/apache.md
similarity index 100%
rename from blog/tag/apache.html
rename to blog/tag/apache.md
diff --git a/blog/tag/astrology.html b/blog/tag/astrology.md
similarity index 100%
rename from blog/tag/astrology.html
rename to blog/tag/astrology.md
diff --git a/blog/tag/c.html b/blog/tag/c.md
similarity index 100%
rename from blog/tag/c.html
rename to blog/tag/c.md
diff --git a/blog/tag/citrix-xenserver.html b/blog/tag/citrix-xenserver.md
similarity index 100%
rename from blog/tag/citrix-xenserver.html
rename to blog/tag/citrix-xenserver.md
diff --git a/blog/tag/command-line.html b/blog/tag/command-line.md
similarity index 100%
rename from blog/tag/command-line.html
rename to blog/tag/command-line.md
diff --git a/blog/tag/conference.html b/blog/tag/conference.md
similarity index 100%
rename from blog/tag/conference.html
rename to blog/tag/conference.md
diff --git a/blog/tag/css.html b/blog/tag/css.md
similarity index 100%
rename from blog/tag/css.html
rename to blog/tag/css.md
diff --git a/blog/tag/debian.html b/blog/tag/debian.md
similarity index 100%
rename from blog/tag/debian.html
rename to blog/tag/debian.md
diff --git a/blog/tag/development.html b/blog/tag/development.md
similarity index 100%
rename from blog/tag/development.html
rename to blog/tag/development.md
diff --git a/blog/tag/django.html b/blog/tag/django.md
similarity index 100%
rename from blog/tag/django.html
rename to blog/tag/django.md
diff --git a/blog/tag/emacs.html b/blog/tag/emacs.md
similarity index 100%
rename from blog/tag/emacs.html
rename to blog/tag/emacs.md
diff --git a/blog/tag/fedora.html b/blog/tag/fedora.md
similarity index 100%
rename from blog/tag/fedora.html
rename to blog/tag/fedora.md
diff --git a/blog/tag/flask.md b/blog/tag/flask.md
new file mode 100644
index 0000000..39ad14c
--- /dev/null
+++ b/blog/tag/flask.md
@@ -0,0 +1,7 @@
+---
+layout: posts-by-tag
+tag:    flask
+---
+
+Flask is a web framework written in Python.  Find
+documentation [here](http://flask.pocoo.org/).
diff --git a/blog/tag/gentoo.html b/blog/tag/gentoo.md
similarity index 100%
rename from blog/tag/gentoo.html
rename to blog/tag/gentoo.md
diff --git a/blog/tag/git.html b/blog/tag/git.md
similarity index 100%
rename from blog/tag/git.html
rename to blog/tag/git.md
diff --git a/blog/tag/glib.html b/blog/tag/glib.md
similarity index 100%
rename from blog/tag/glib.html
rename to blog/tag/glib.md
diff --git a/blog/tag/gnome.md b/blog/tag/gnome.md
new file mode 100644
index 0000000..b1fa85d
--- /dev/null
+++ b/blog/tag/gnome.md
@@ -0,0 +1,4 @@
+---
+layout: posts-by-tag
+tag:    gnome
+---
diff --git a/blog/tag/gnome3.html b/blog/tag/gnome3.md
similarity index 100%
rename from blog/tag/gnome3.html
rename to blog/tag/gnome3.md
diff --git a/blog/tag/heartbeat-cluster.html b/blog/tag/heartbeat-cluster.md
similarity index 100%
rename from blog/tag/heartbeat-cluster.html
rename to blog/tag/heartbeat-cluster.md
diff --git a/blog/tag/kerberos.html b/blog/tag/kerberos.md
similarity index 100%
rename from blog/tag/kerberos.html
rename to blog/tag/kerberos.md
diff --git a/blog/tag/linux.html b/blog/tag/linux.md
similarity index 100%
rename from blog/tag/linux.html
rename to blog/tag/linux.md
diff --git a/blog/tag/monitoring.html b/blog/tag/monitoring.md
similarity index 100%
rename from blog/tag/monitoring.html
rename to blog/tag/monitoring.md
diff --git a/blog/tag/mysql.html b/blog/tag/mysql.md
similarity index 100%
rename from blog/tag/mysql.html
rename to blog/tag/mysql.md
diff --git a/blog/tag/oracle.html b/blog/tag/oracle.md
similarity index 100%
rename from blog/tag/oracle.html
rename to blog/tag/oracle.md
diff --git a/blog/tag/otrs.html b/blog/tag/otrs.md
similarity index 100%
rename from blog/tag/otrs.html
rename to blog/tag/otrs.md
diff --git a/blog/tag/php.html b/blog/tag/php.md
similarity index 100%
rename from blog/tag/php.html
rename to blog/tag/php.md
diff --git a/blog/tag/python.html b/blog/tag/python.md
similarity index 100%
rename from blog/tag/python.html
rename to blog/tag/python.md
diff --git a/blog/tag/ranting.html b/blog/tag/ranting.md
similarity index 100%
rename from blog/tag/ranting.html
rename to blog/tag/ranting.md
diff --git a/blog/tag/red-hat.html b/blog/tag/red-hat.md
similarity index 100%
rename from blog/tag/red-hat.html
rename to blog/tag/red-hat.md
diff --git a/blog/tag/sass.html b/blog/tag/sass.md
similarity index 100%
rename from blog/tag/sass.html
rename to blog/tag/sass.md
diff --git a/blog/tag/selinux.html b/blog/tag/selinux.md
similarity index 100%
rename from blog/tag/selinux.html
rename to blog/tag/selinux.md
diff --git a/blog/tag/ssh.html b/blog/tag/ssh.md
similarity index 100%
rename from blog/tag/ssh.html
rename to blog/tag/ssh.md
diff --git a/blog/tag/symfony.html b/blog/tag/symfony.md
similarity index 100%
rename from blog/tag/symfony.html
rename to blog/tag/symfony.md
diff --git a/blog/tag/technology.html b/blog/tag/technology.md
similarity index 100%
rename from blog/tag/technology.html
rename to blog/tag/technology.md
diff --git a/blog/tag/testing.html b/blog/tag/testing.md
similarity index 100%
rename from blog/tag/testing.html
rename to blog/tag/testing.md
diff --git a/blog/tag/vala.html b/blog/tag/vala.md
similarity index 100%
rename from blog/tag/vala.html
rename to blog/tag/vala.md
diff --git a/blog/tag/windows.html b/blog/tag/windows.md
similarity index 100%
rename from blog/tag/windows.html
rename to blog/tag/windows.md
diff --git a/blog/tag/wordpress.html b/blog/tag/wordpress.md
similarity index 100%
rename from blog/tag/wordpress.html
rename to blog/tag/wordpress.md
diff --git a/blog/tag/zabbix.html b/blog/tag/zabbix.md
similarity index 100%
rename from blog/tag/zabbix.html
rename to blog/tag/zabbix.md