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You can use the search line on Google: site:www.example.com This will tell you what Google has indexed on the site. If you are looking for a specific sub-folder, then use: site:www.example.com/forum Hope that helps.

You can't get sandboxed for what points to you (if that was possible you would just do whatever was necessary to sandbox all of your competitors). You CAN get sandboxed for pointing into bad neighborhoods, and pointing to web wings or reciprocal linking with bad sites could fall into this category. There's no short cut. Work on getting valuable links from real sites. Give them come unique content (guest blog article, perhaps) in exchange for a link back. It's more work, but it's white hat and the link will pass real juice to your site.

Don't do it. Yes, they will be spammy, low-quality, and pass extremely little (probably zero) page rank. The directory pages are probably not indexed and if they are they are probably devalued. And if there are 65,000 of them then they're probably all owned by the same guy, in some templated database style, with the same C-class IP address. Google is wise to this and doesn't index or doesn't value those kinds of links.

Pagerank is tracked on a 1-10 system, 10 being the best. However, Pagerank is not the end all of how well a site is trusted or how quality their link popularity is.  I have seen sites with pagerank 1 beat sites with pagerank 5. You should use the SEOmoz tool bar, which shows Mozrank, Moztrust, and PageAuthority.  Some info on that here; http://www.seomoz.org/learn-seo/mozrank

Hi Dejan, Thank you for answering my question. I was wondering on a scale of say 1 -100, how much link value would a duplicate content link have? Also does the link from the original article have normal link value, or does the orignal article get penalized with a duplicate link value as well?