How did you find your forum niche?

[Shawn Gossman]

Your forum niche is the topic that your forum is about.

For example, this forum's niche is vBulletin administration. It is all about using vBulletin to create an online community.

I came up with this niche after falling back in love with vBulletin and feeling that it could use its own dedicated admin community.

So, what's your forum's niche? How did you come up with that niche?