In your opinion or experience what is the best way to target a niche for advertising... such as how would you target truckers, or vegetarians, or perhaps human resources to sell space on your site? Also is there a site or journal that has email addresses of niche areas. Mass listing of emails for HR, vegetarians, etc.?
You need to think the way they do. Advertise on magazines they read & maybe you should start a blog that talks about something they like to read. You might want to try writing & distributing press release too. It can help to establish your reputation as the expert in that niche
The best way to create a niche for advertising is doing email marketing. Create a simple website and start to accumulate email list. Those who opt-in are actually interested in you niche topic. Then "feed" them with latest and related news. In the process, you may also sell them some related products. This is what i would say "targeted".
Thanks for your responses. I thought email marketing was also the best way. The tough part and time consuming will be copying and pasting all the niche email addresses.
I don't know what you mean by copying and pasting the niche email addresses, but whatever it is it doesn't sound good... you should be collecting emails from your visitors into a newsletter or autoresponder with opt-ins, no copy and paste needed. If you're grabbing emails from other places you're setting yourself up for troubles. Whenever I target a niche that's new for me I setup a simple squeeze page to grab opt-ins, then I build a dozen or more secondary sites (blogs, squidoo, hubpages, etc.) and publish a bunch of articles to ezine directories to feed links and traffic to my squeeze page. If you create good content, or flood the niche, you should be able to build a decent list in short time and it will be a quality list of targeted people for you.
You advertise where potential customers go to. Example: If you are selling funny T-shirts, you advertise in funny sites.
I will strongly starting a Niche blog, and then market it with comments on related niche sites, and of course forums.