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qwertzlcoatl · 4214 days ago · link · · parent · post: Hubski featured in list of top upcoming link sharing communites
Out of the five suggested websites, three require you to login in with Facebook, Twitter or LinkedIn. That's three websites I won't even consider by content.
And of course the availability of upvote-bundles which you can purchase online for marketing purposes. I felt an heavy uprising in PR-related content in the past year.