I think Introverts are just as good when it comes to yapping their faces off, it's just that having a function like Ne at the forefront really helps, as it is absolutely natural for you to gather and store interesting or odd pieces of information. Conversations purpose is to share information, to make a fully functioning kitchen in a restaurant, communication is important, almost vital. So gathering information to share is the most vital point, it doesn't matter if you have to mull it over a little bit first, your conversation might be a little slower, but it will be just as interesting because it will probably pack more punch (so long as you say what you want before it's too late). So practice your Ne gathering skills in whatever free time you've got, and then unleash it upon people (when appropriate).
Dammit, I think I'm just repeating myself here... I tend to say a fair bit of meaningless crap