# make the url nice and clean; the comments shows an url that should be matched
# web_base/tag/me+berlin/pic/id
-RewriteRule tag/([-_a-zA-Z0-9+]*)/pic/([0-9]*) index.php?tag=$1&pic=$2 [L]
+RewriteRule tag/([-_\s,a-zA-Z0-9+]*)/pic/([0-9]*) index.php?tag=$1&pic=$2 [L]
# web_base/tag/tag1+tag2/page/4
-RewriteRule tag/([-_a-zA-Z0-9+]*)/page/([0-9]*) index.php?tag=$1&page=$2 [L]
+RewriteRule tag/([-_\s,a-zA-Z0-9+]*)/page/([0-9]*) index.php?tag=$1&page=$2 [L]
# web_base/tag/tag1+tag2
-RewriteRule tag/([-_a-zA-Z0-9+]*) index.php?tag=$1 [L]
+RewriteRule tag/([-_\s,a-zA-Z0-9+]*) index.php?tag=$1 [L]
# web_base/pic/17
RewriteRule pic/([0-9]*) index.php?pic=$1 [L]