How do i block google from indexing only my community pages in joomla?

Hi friends.

I Recently started a community and discussion forum in joomla using jomsocial. Lots of pages getting indexed in google with duplicate title tags and meta description. This may affect my Search engine ranking. I would like to block google from indexing only my community pages not the articles. How do i do it. Please someone help.

The first question I’d ask is—Why not just add unique titles and descriptions to each page?

GWT ignores numeric paginated pages, also Canonical Links?

I have thought appending the first item title page from the paginated list of page items.

Any other suggestions before I start messing with scripts?

robots.txt (http://www.robotstxt.org/robotstxt.html)

@ awasson

Can you please tell how to create robot.txt to block specific pages. I want to block google from accessing both discussion forum and jomsocial community. Also i would like to display adsense ads on these page. Please help.

duplicate Pages’s are getting created like this below with same title tags - For the Discussion forum.

example.com/discussions/profile/jonesy91/user-post
example.com/discussions/profile/jonesy91/user-replies
example.com/discussions/profile/jonesy91
example.com/discussions/index
example.com/discussions/tags/automotive
example.com/discussions/tags/congratulations
example.com/discussions/tags/discussions
example.com/discussions/tags/general
example.com/discussions/tags/info
example.com/discussions/tags/sharing
example.com/discussions/tags/thank-you
example.com/discussions/tags

For Community
example.com/my-profile/182-christine
example.com/my-profile/186-ann
example.com/my-profile/189-nancy-curtin
example.com/my-profile/193-same
example.com/my-profile/195-rein-heart-ralutin
example.com/my-profile/198-prakash
example.com/my-profile/edit
example.com/my-profile

Well, with robots.txt you can tell the bot not to index a particular set of specific urls or a whole series of them

User-agent: *

#Don’t index anything in discussions or my-profile
Disallow: /discussions/
Disallow: /my-profile/

#Don’t index some specific pages
Disallow: /my-profile/182-christine
Disallow: /my-profile/186-ann
Disallow: /my-profile/189-nancy-curtin
Disallow: /my-profile/193-same

Does that make sense?

Thanks a lot AWASSON. if i block google. does the adsense ads will be displayed on those pages.