A clever list of  free* Internet guerilla marketing tactics to help promote your product, service or website instantly: 

1. Create a Google Gadget.
   You can create Google Gadgets such as a countdown timer (to an event), a list (of ideas, suggestions, products, etc), a microblog (what you’re doing or working on) or a YouTube channel (videos about your company, service or product), then publish it on the Google network for other people to add to their customized iGoogle page. You can also email the Gadget link to a list of people.  
2. Post comments on related articles.
   Many news sites or ezines include an option to leave comments at the end of articles. Some like CNN even track backlinks from blogs that link to the article. Search for articles related to your company’s business, then post an intelligent response or comment on the article, including your company’s name, URL and/or email address, if possible. 
3. Write a press release.
   Your press release can be about anything, but should be tied to something timely such as a recent event or announcement. Many sites such as the ones cited here offer a free press release service. 
4. Create a Facebook app.
   Facebook makes it relatively easy to develop an application that Facebook users can add to their profiles and pages. Facebook still has some buzz in traditional media channels, so sometimes you might even get some earned media (an editorial article written about your company) because of the interest in your new Facebook app.
5. Piggyback on someone else’s email subscriber database.
   Wouldn’t it be great to get a plug for your company in someone else’s mailing list? If you know of a company or an individual (such as a blogger) with a sizeable mailing list, offer to barter some services or products in exchange for a mention in their next email newsletter or notification. If you do have your own mailing list, you can ask another list owner to include a link to your sign-up form, or offer to add their sign-up form to your page if it seems that subscribers on each site may be interested in the other site’s content as well.   

Got more freebs? Share the wealth…let us know about your tips by posting them here. 

Email: Garth@DigitalPractices.com

* Services cited in the list above were free at the time this list was published, and have been published here as a service to readers. Some of these sites may offer fee-based options as well.