Are these Sites safe(pupose:to link with good websites such that even PR may increase) to reach targeted visitors

1. Aboutus.org
2. linkedin
3. Reddit
4. Digg
5. Twitter
6. Mixx
7. Myspace
8. Facebook

Regards,
sama

i already tried all of it except this one "linkedin" so far i don't encounter any problem..

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Pet Beds | No Bark Collars

Some have "nofollow" attribute but if properly used, they could drive traffic to your site.

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petsafe | seo internet marketing

You will benefit from the links... so try to get links from these sites with your keyword in them.
Yes... they are all super safe and authority sites as well.

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