How NOT to index "add a comment" pages

[UnderWarrior]

Hey all,
I got a site with around 100,000 different products on it. For each product there is "add a comment" page where the user can add his opinion to the product.
Currently Google index many of those "add a comment" pages - pages without any real content and I'm thinking about the best way to prevent Google from indexing it. I would like your help here:

1. Adding "meta robots=noindex" to all of those pages
2. Adding add-comment-to-product.php to the disallow in the robots.txt file
3. [MY QUESTION HERE] Adding "rel=nofollow" on the 100,000 products pages? As far as I know its better not to use rel=nofollow for internal links. Yet - I simply do not want search engines to follow those links or pass PR to it.

My questions:
1. I will be glad to hear your opinion about (3) - Is "rel=nofollow" the solution here? Or maybe there is a better solution? I thought about making those links a JS links, but: a. Google follows JS links from time to time. b. its ugly.
2. Do you see any other step needed in order to block all of those unnecessary pages?

Thanks alot!

[tedster]

If I wanted to achieve this goal, I'd probably use the meta robots noindex. That way the pages will still get spidered, but they won't show up in search results and get direct traffic.

I wouldn't worry about PR here. Have navigation on those comment pages pointing back into the regular pages and let them circulate PR back into and around the site naturally.

If you use rel="nofollow", then the pages won't even be spidered, and I'm a firm believer in letting PR circulate naturally. I might want to add rel="nofollow" to any links that users generate within the page, but let the navigational links circulate PR naturally back into and around the rest of the site.