SocialBlogsite htaccess file

<IfModule mod_rewrite.c>
# Send old /blog URLs to the new location
RewriteEngine On
RewriteBase /
# If the request exist as a real file or directory then ignore it
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# Ignore /blog without a trailing /
RewriteCond %{REQUEST_URI} !blog$
# Ignore requests with a trailing /
RewriteCond %{REQUEST_URI} !([0-9].*)/$
# Still here? Rewrite /blog/123 (no trailing slash)
RewriteRule ^blog/([0-9].*)$ http://%{SERVER_NAME}/?p=$1 [R=301,L]
#
# If the request exist as a real file or directory then ignore it
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^blog/(.*)\.html http://%{SERVER_NAME}/$1 [R=301,L]
#
# After all that rewrite any remaining /blog
RewriteCond %{REQUEST_URI} !([0-9].*)/$
RewriteRule ^blog/(.*) http://%{SERVER_NAME}/$1 [R=301,L]
# Now continue on and let WordPress do it's thing
</IfModule>