Please help! Should I use all "nofollow" links within my post?

For example, articles like- Best 30 WordPress Plugins or Top 25 Android Apps are going to have so many external links. Should I use all those links as "nofollow" or "dofollow"? Actually I want to give credit to all of those links by avoiding "nofollow". Will it hurt my... show more For example, articles like- Best 30 WordPress Plugins or Top 25 Android Apps are going to have so many external links. Should I use all those links as "nofollow" or "dofollow"?
Actually I want to give credit to all of those links by avoiding "nofollow". Will it hurt my website?

Thanks to all helpful and nice people here.
Update: My point is, if I want to "dofollow" ALL of them, will it be bad?
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