You're making a good contribution to the wikipedia.
However, I just think what you're doing to ion thruster is bad. Most of what you've written should be at the electrostatic ion thruster article, not in ion thruster. Ion thruster should be a superset article that describes the broad families of ion thrusters, with wikilinks to specific articles on particular designs elsewhere. What you've done is make it all about gridded designs; as if this is the only kind of ion thruster there is. Right at the moment if anything hall effect thrusters are as or even more notable.WolfKeeper (talk) 20:27, 21 November 2007 (UTC)