We cannot forget the SEO ! It´s very important to forgot present-days!
At your tag pages you could put at keyword, title and description tags anything generic and the variable $tag . That would make unique tags and unique content too ...
This is my keyword and description tags
Code:
meta_keywords="online word1 $tag,online word2 $tag,word3 $tag,word4 $tag,word5 $tag,word6 $tag,word 7 $tag"
meta_description="word1 $tag page $current_page - word phrase $tag | Another Word $tag OnLine"
%>
I hope i help u.