Earning sim money

Keep factories going constantly, join an active club, participate is as many activities as you feel comfortable with (CoM, wars, design contests).

Try to ignore the whiners.  There are a lot in this forum.  When the game changes, adapt.  You can have a thriving city even with bad updates.

As much as I hate 90% of tapjoy, there are a bunch of easy ones to earn sim cash.  Once you exhaust those, it's slim pickins but they update often.  

Did I say keep factories going constantly?

Cheers!