Since I need to geocode for my project on LeadSwami.com, I decided to make the geocode api public. Check it out:

http://leadswami.com/api/

Enter in an US address, and it will return the latitude and longitude of the address. If you enter a fuzzy/badly formed address, it will return a number of listings with ranked results. It’s really pretty nifty. :-)

Free for personal or comerical use as long as you keep it under 5000 requests per day. Only restriction is that if you use it in on the web for anything queried live, give a link back to LeadSwami.com. If you need more access, please contact info@leadswami.com.