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If you look at the kind of crappy sites BMR was putting up, and compare that to 30 legit business websites, you'll realize that no, nowhere near the same amount of risk is involved. Nakul is right though, just make sure it's part of a wider link building strategy.

Dan is correct you need a 301 to correct the problem Seems like you are trying to create friendly urls. Depending on what server you are using this can be very easy. If you are using a Microsoft server you can create the freindlly ursls along wuth the 301 redirects simply with a wizard. See half way down the page. http://www.seomoz.org/ugc/microsoft-technologies-and-seo-web-development