Some of you guys were asking for this cheat as you do not want your friends to notice that you were cheating. So I hope this cheat is of help to you.
Credits：Aaron Yao＠fREE2SW4U, istroke@r2o
- charles 3.4.1 (download. do not update to 3.5)
- Open Charles
- Go into Cafe World
- Visit a friend, eat the food and return to your cafe.
- In Charles, look at the 'Structure' tab.
- Find for the line "http://fb-client-1.cafe.zynga.com" or "http://fb-client-0.cafe.zynga.com"
- Expand 'current' > 'lib' > 'amfphp'
- You should see the line 'gateway.php(YoCafeRemote.saveData)
note: there may be a few, check step 8 to make sure you got the correct line.
- Click on the request tab and you should see 'friendMission' as the value of the String.
- Right click this gateway.php(YoCafeRemote.saveData and select Edit
- On the bottom of the right window, select 'AMF'
- Change the String 'friendMission' to 'updatedTutorialStep'
- Expand the  Object and you will see a 'leave_tip' field with a value of 1.
- Change 'leave_tip' to 'step'
- Change '1' to '50'
- Click execute. And you will immediately get $2500
- A new gateway.php (YoCafeRemote.saveData) should appear. Click it and click on the 'Request tab'
- You should now see a 'pwnthis' for the String.
- Right click this line and select 'Repeat Advanced' 100,000 for iterations and 5 for concurreny.
- Now just leave Charles to run. Coins will increase without the exp.