Affiliate Marketing Secrets

I’m curious about how people go about finding a niche or a style for their photography. I’ve heard people say that they just photograph things they’re passionate about and over time a style develops. Is that how it works for you?
For myself, I don’t think I have a style or a niche. I’m not particularly worried about developing one or the other, I’m just a hobbyist. I shoot what I want and how I want to, sure, but there isn’t really any consistency with it. I’ve never had a moment where I said to myself (for example) “I want to be an automotive photographer!” While I might photograph a variety of things (generally objects, I find working with people tedious at best) I guess I’m just not passionate enough about any one genre of ‘thing’ to make that my niche.

Should I start a blog? If so, which blog service would be best for a photographer to promote his work?
My work consists mostly of people. The genre is between art and fashion. I’m still trying to find my footing/style and niche. It is quite frustrating! :S

Am the designated website photographer for a niche sports team. Everytime there’s a session, which is usually practice, or sometimes a social event of the players, I click photos and upload them onto my flickr account but as a ‘new set.’
Considering there are links like RSS, is this a good way to go? What will yield maximum public coverage, since am pasting separate sets’ flickr links into separate blogs on the website?
Or is it better to just continue adding photos to the same main set, considering users may have subscribed to the RSS link?

I’ve had this kit for quite a while.
It’s a Nikon d3000 along with a AF-S Nikkor 55-200mm and AF-S Nikkor 18-55mm VR. I’ve always been interested in Photography and now after spending a few years trying to find my niche in College I’ve decided on being a photographer. What type of Photographer is still up for debate however.
Though I’m finding it hard to make the effort to move forward. I don’t want to enter college courses or attempt to get into freelance photography at a paper somewhere with gear that screams “Don’t take me seriously!”
So do I need to invest in expensive gear to start down a photography career path, or am I exactly where I should be when it comes to gear?