Attack a bonus from two directions with a delay. The armies committed on one side cannot be transferred on other fronts.
How is this a ruse? It's more like attacking and praying that you will break the bonus.
Do not commit [an] attack when there is reason that a bonus shall be defended.
Build an initial stack in defense in large bonus as +10 the same turn as opponent borders it.
Use armies to attack bonuses of opponent.
Unless the game includes light fog, or you're an expert at determining possible expansion scenarios, this is utterly useless. Chances are they also have a stack incoming if they guess where your position is, so the premature building of borders just succeeds in giving you a positional disadvantage.
Over deploying armies is bad.
Yes, just like not picking correctly, predicting your opponents moves incorrectly, or triple-picking wastelands.
Build bonus borders as ruse without expanding.
Example? Usually if you just sit and build borders, while your opponent may not have a stack/army advantage, they will have a positional and income advantage. Therefore, it just becomes a war of attrition, until your stacks run out, and you are eventually broken.
Suicide a pick first turn. Have a second pick nearby not connecting and bordering bonus.
Example? Unless it convinces the opponent that you have been eliminated from that area, all you have done is succeeded in wasting armies and possibly losing an advantage that you might have had.
Use public chat for mind tricks.
Do not deploy full production when all picks FTBs as ruse.
Example and/or better explanation of your point is needed.
Or make opponent believe you are not expanding.
There we go, finally one decent point. If you can manage to convince your opponent that you are stagnating, (by deploying the same amount of armies against your opponents borders each turn), you might be able to convince them that you are not expanding. Lulling them into a false sense of security to also not expand (especially if they have the income advantage), will be detrimental to them in the long-run.
You need to better articulate your points, or provide examples of what you mean. Otherwise, almost all of the examples that you have posted aren't "ruses," just tools to help you lose the game quickly.
Edited 8/28/2015 16:34:39