Is there anything like facebook sharing?

I want to build an authority site. Don't want to use hubpages or Squidoo even for a backlink because my site is new and they might outrank my keyword. Is it true? Don't want to do article syndication for traffic. I want to do write everything on my site.

After writing I want to share like on Facebook. Is there any other thing like FB sharing. Dig or Delicious are they worth for sharing ?

what is your opinion about web2.0. Can anyone give exmaples of Football(Soccer) related web2.0?

How is my plan?
Thanks