[nico_swd]

I've checked your site a bit, and there are some users with weird usernames that could cause errors. This here should work with most of them.

RewriteEngine on
RewriteRule ^(.*)/$ user.php?username=$1 
RewriteRule ^(.*)/friends(/)?$ user.php?username=$1&display=friends
RewriteRule ^(.*)/syndications(/)?$ user.php?username=$1&display=syndications
RewriteRule ^(.*)/([0-9]+)$ user.php?username=$1&e=$2

It would be easier and safer if you could use the userids instead of the usernames. If a user has for example a * in his username it will cause an error, and I'm not sure if there's a way around that.

The code above also requires a slash at the end when calling /journals/sabret00the/. I couldn't get it to work without.