I searched for some exploits so they can be takes care of before they can cause trouble later.
Seeds can be planted in places they shouldn't like in front of doors, basically trapping players in a certain area.

Corn is the best plant to trap people with.
This next one isn't really an exploit, but an annoyance. The conveyor belt for the logging machine moves way too fast. If the wood drops before you get to it, usually someone will pick it up and run.
The same with growing things, some people were camping over me while I grew trees, they chopped them down and ran off with the wood.
This and my other thread are pretty much all I could find today.
