Social Media Marketing

my brother is doing a report (iguess) and he needs ideas in some social issues. Anything interesting going on in this world? That is social issues? Thankssss!

my wife and her brother own a jewellery shop in Dublin which is a little out of the way, and advertising budgets are limited... any ideas on how we can promote it using social media techniques? Anyone had any success with this? Many thanks for any suggestions

My brother swears by Twitter when it comes to networking and getting job opportunities. I noticed this with two companies I started following. How do I us Twitter to maximize this potential?

I need an example of a big company acting like a bully in social media, removing blogposts, deleting negative comments, any social media msitakes a company might have done on YouTube, Facebook, Orkut, MySpace etc.