I would advertise your private jet on ebay or on Craigslist. Or if you wanted something for specifically advertising jets for sale I would try aerotrader.com which specifically advertises jets for sale.
A chicken farm
wheres the best place to refil a keg
www.rentals.com has the most listings
On someone else's body
The best place to advertise the job is in the ethical seo services. It can only cost you a cheap seo services if you try this online marketing strategy.
The best place to advertise a Chevy Blazer for sale would be on the auction site eBay. Or, advertise the vehicle in the local newspaper or auto trader newspaper.
The best place to advertise a Porsche for sale would be in car enthusiast magazines or classic car magazines. One could also advertise locally in the newspaper or at a local car show.
Probably the best place to advertise free kittens is in your local newspaper which can offer advertising space at a usually decent low price. Otherwise your best bet would be to contact a cat charity.
Your local newspapers and/or Craigs List.
The best place to advertise a gold mine is online advertising through Search Engine Optimization (SEO). Lots of affordable seo service now that offers affordable seo packages.
You could advertise Welsh pony foals on Dreamhorse.com, Equine.com, equinehits.com, bigeq.com, and horsetopia.com.
One of the best place where you can advertise your business as a independent female companion is LUSTII, Visit them and check by your self.