Actually, I couldn't get tags from Naver blog.
It's not I didn't, but I "couldn't".
Anyway, I decided to use Daum blog.
It's easier way to crawl~!
I have made crawlers for 'Twitter(wrapping)', 'Daum', and 'MBC TV board'.
I think I will be a crawler maker;;;
It's good to gather information from internet~! but I need more practice of AJAX and web programming;