September 18th is our fourth birthday - and we couldn't ask for a better gift than a surprise visit from former US Senator Tom Daschle!

The last few months have brought news of important advances in the fight against HIV / AIDS, but the disease is still pandemic and growing. Get the facts, and learn what you can do to help.

We share a birthday! Almost. That's right, ZocDoc is three years old today, September 18th - just one day after Beantown was founded and the famous sumo wrestler Minanogawa Tozo was born! What can we do to celebrate?

They grow up so fast. When it was founded, ZocDoc was being run by three people with a big idea in a little East Village apartment. One year later, we've got a real team, a real office, and real support from some of the biggest names in business. We're proud to announce the two newest investors in ZocDoc, Marc Benioff (founder and CEO of Salesforce.com), and Bezos Expeditions, the personal investment company of Jeff Bezos (founder and CEO of Amazon). We have had an amazing first year, and the support we have received only encourages us to continue growing. Now offering six specialties, we look forward to providing more services in more areas in the months and years ahead!

So much can happen in twelve months. This time last year, ZocDoc was chosen as one of the 40 hottest startups at the TechCrunch40 conference. We packed our bags, went to San Francisco, and presented our brand new company. This year, we are proud to be coming back as alumni to what is now TechCrunch50. From September 8-10, you can find us at the San Francisco Design Center Concourse, where we will be giving demonstrations and even unveiling our iPhone application prototype! If you're in the San Francisco area, or plan on coming to TechCrunch50, make sure to stop  by and say hello! UPDATE: Thank you to all of you who came over to check in with ZocDoc! We're so glad to have met everyone we did. A special thanks to Jefferson Graham of USA Today, who really liked the idea of being able to find doctors in your network on our website, and wrote about us on his Technology Blog!