How do you make Farmville level up faster?

There so many ways to earn lots of Farm Cash in Farmville:

Slight Effective Way

a. buy Farm Cash or Zynga Game Cards

b. Level up your accounts

c. Participate in some cross promotional offerings between Zynga and other companies which sometimes gives from 2 - 5 Farm Cash

More Effective Way

a. Submit your complains to Zynga Customer Support regarding your farms and you'll be given compensation for the problems you have. A more serious problem earns you huge amount of Farm cash from 10 Farm Cash to 300 Farm cash or even higher

b. be active on the glitches happening. There are glitches of getting lots of Farm Cash by leveling your accounts to level 250 in 5 minutes and if you have a new dummy account, you'll get 250 Farm Cash in an instant.