Haha, unfortunately I am already familiar with one of the topics, so the rest filled itself in. You are...
A dragon!
like an RPG character, i seek a Disciple
SE Site: Role-playing Games
Topic: Dragon Disciple (Pathfinder)
Naturally Speaking, one will increase my Productivity.
SE Site: Personal Productivity
Topic: Dragon NaturallySpeaking (voice-to-text software)
Seekers of the position might look to the Arcade
SE Site: Arqade
Topic: Dragon Seekers (Elder Scrolls)
and take the Rocket to the World i have Built
SE Site: Worldbuilding
Topic: Dragon spacecraft (SpaceX)
Puzzling, aren't i? you may need a Magnifying Glass to guess my true form.
Could just refer to needing to use the search tool to find the common thread, but whattayaknow, there's a puzzle.
SE Site: Puzzling
Topic: The Dragon or the Magnifying Glass? (lateral-thinking)
Title: "Forms of Exchange"
Refers, obviously, to the different Stack Exchange sites that are referenced.
BONUS
Accidental/inconspicuous dragon...
Site: Stack Exchange (at large)
Topic: ChronoD
Self-imposed bonus!
@ChronoD: "I actually didn't use Anime just because it was difficult to find a match for."
i'd prefer someone rather Animated with the Balls to do anything i ask.
SE Site: Anime & Manga
Topic: Dragon Ball (and variants)