Posting random, useless, or superfluous stuff does not earn you promotions. If anything it will earn your either demotions or really annoy your superiors who probably won't give you promotions as a result.
The best ways to be active:
Come on IRC
Post on the stories once you have been assigned to a squadron
Play in some gaming events
Recruit
Try to help your squadron in anyway that they need
If you do those things and not ask for promotions, you will get them. Random useless posts won't help your cause.
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FM/ESN_Arturus/Nazgul 1-2/Phoenix Wing/M-SSD_Atrus/VE/VEN/(=A=)(=SA=)(=*MA*=)(=JCPA=)(=SCPA=)[MC:1][SV][BRC][LSM][LoC]