It's a tricky balance. I have the same dilema between trying to post as much as I want and not wanting to take away others opportunity to rp. Generally, I think this thread does a good job.
Speaking of rp, let me tell you my personel thoughts on my character development. Hehsh is an orphan raised by non dragon druids. He never knew another dragonborn or dragon, which is why he peppered Zoboanth when they first met. I put draconic on my character sheet because the PHB said dragonborn speak draconic. But canonically, no one taught Hehsh how to speak or read draconic. Not sure how that works in game. Potential plot hook for the GM to use I guess.