This is getting into too much of a stalemate. Therefore, I am going to change the rules slightly. Each post counts +2 and -2 from now on. In addition, each additional post in a row from one side after the first (this overrules the original rule in the OP regarding 5 consecutive posts from one side, I will edit it shortly) adds or removes an extra one. For example:
First post from adding team adds 2
Second consecutive post adds 3
Third consecutive adds 4, etc.
If the minus team were to now post, their first post would take away 2, and reset the plus team's scoring bonus. If they managed to post consecutively, they would remove 3 for the second post in a row, then 4 for the third, and so on.
Any other rules I did not mention in this update are unaffected.
A final note also: I plan to be taking a more active role in this so I may also announce certain changes if the stalemate is not resolved. I am trying not to just make it boring so a few possibilities I have been thinking of could be a random dice roll affects the count, or maybe something based on the timing of posts. I may even add some kind of upgrades you can 'purchase' by posting enough times. Probably most of these things will not come into effect until this game ends. Once the game ends I will open a new thread when I have time to accomodate all these potential new rules. You can tell me what you guys think about this kind of stuff below. Best of luck to both teams.