Can someone with an unlimited amount of money compromize the network? I was reading this interesting discussion in the comments section on ZH where this guy was talking about how a single entity (think corrupt government and banksters) can throw money and processing power at will at the network to successfully manage a 51% attack or just cause havoc in the system by sending incorrect network messages, such as denying valid transactions or allowing invalid transactions. 

The initial part of the discussion quoted here


  Assume I'm a completely unscrupulous and ammoral person, for example,
  and I want to shut down bitcoin.  Here are the ways I would attempt to
  do it.
  
  
  Write a virus to mine bit coins and spread it across the internet.
  Write a virus to steal bit coins, and spread it across the internet.
  Write a virus to act as part of the bitcoin network, and deny
  transactions that are valid
  Write a virus to act as part of the bitcoin network to approve
  transactions that are invalid.
  Dump the bit coins I mined as part of step #1 and #2 on the market
  Create a mania in bitcoins by dumping billions into buying bitcoins
  after doing step #5
  Associate it with terrorism
  Associate it with drugs
  Claim that people like me are manipulating it
  
  
  And that's just off the top of my head.
  
  I gots unlimited money.  I am working in a market that is unregulated.
  I run the government or own it.  Try to stop me.


Here is a link to that discussion. 
http://www.zerohedge.com/news/2013-03-25/bitcoin-mania-accelerates?page=2#comment-3373165

Can someone please comment on whether this is possible and if not, how does the bitcoin algorithm/ecosystem counter such an attack
With unlimited money, you could destroy almost anything. I don't really see why it matters. If someone with unlimited money spends a few billion dollars to destroy Bitcoin, we'll just create Bitcoin2 and maybe he'll spend another few billion destroying that. We can keep creating new crypto-currencies indefinitely. If each one gets a few billion dollars out of the hands of some evil entity, that's a win in my book.