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I'm looking into testfreaks for a client - frankly i'm having trouble answering a few of my own questions about them, namely:

1. Can Google spider the test freaks javascript link?
2. Can Google then crawl the reviews in the frame generated?
3. Will Google count that as dupe content? (the content in the frame seems to reside on the testfreaks.com domain..)
4. Do you think this is a safe method of increasing conversions?

Seems all good to me, I'm mainly concerned about dupe content (and whether reviews written within the testfreaks interface can then be spidered ... and i'm not sure it can be).

Or worded differently:

Has anyone heard of "big" SEO companies removing links after termination of service?

I have a client who isn't particularly happy with the SEO he's getting from a big Aussie SEO firm, and he wants to terminate, however they've built thousands of links for him and he's a little concerned they might all get pulled.

Has anyone heard of this happening, or;

Do you think this is a legitimate concern?

I think its physically possible to remove backlinks like this because it seems the SEO firm in question is building links by using other client's websites.

I also wonder if they might have large content farm style sites where they place links for clients which might be quite easy to take down.

Please discuss!