Social Bookmarking

SEO
1

Hello, is it problematic to use the “Add This” plugin while doing social bookmarking?

This caught my attention in the video. He installs the plugin at 2:14.

2

I recommend sharing from Video 2013 manually with one sentence each. If there is something doing it automatically, I suggest changing the sentences and posting them.

3

Thanks for your advice.

4

Is there an auto-bookmarking program that can bookmark to many places simultaneously? Would it be useful, or would we see the harm?