Classification or clustering ?

[JAGANADH G]

Hi All
I am working on a small project to identify a vertical of a content for news
paper sites.
Typically an online newspaper contains news items travel blogs product
reviews etc..
If I write a Mahout based system to identify travel and product reviews from
newspaper which startegy will be better
Classification or clustering ?
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JAGANADH G
http://jaganadhg.freeflux.net/blog
*ILUGCBE*
http://ilugcbe.techstud.org