If you are doing your business online. Keyword advertising is one type of advertisement that can be very effective in bringing sales and traffic to your site, Keyword advertising is very effective. For example you are selling native handicrafts. When someone search "handicrafts" or "native handicrafts" at a search engine like Google and Yahoo, these search engine often shows advertising based on the keywords that you searched for, in the search results on the page.
One of the most popular type of keyword advertising is Google Adsense, which is a pay per click based advertisement. Your ad will be showed on similar teamed websites so the chance that someone will click on you advertisement will be very high since the visitors are already looking for products or services you are offering.
In the Philippines, Online marketing has yet to fully take off due to the love of Pinoys for actually going to a mall to shop and to haggle in tiangges. But due to the conveniences of shopping online and the increasing number of Pinoy internet users. The future of keyword advertising via pay per click is an exciting one.