If you are having the problem of websites blocked or you’d like to surf the web anonymously, you can try one of the following solutions below.  If you live in a place, such as China, where most of these sites are blocked, you can either download it when you are outside of China or get a friend to send them to you.

Sesawe is a global alliance dedicated to bringing the benefits of uncensored access to information to Internet users around the world.

Hotspot Shield
Hotspot Shield protects your entire web surfing session; securing your connection at both your home Internet network & Public Internet networks (both wired and wireless). Hotspot Shield protects your identity by ensuring that all web transactions (shopping, filling out forms, downloads) are secured through HTTPS. Hotspot Shield also makes you private online making your identity invisible to third party websites and ISP’s. Unless you choose to sign into a certain site, you will be anonymous for your entire web session with Hotspot Shield. We love the web because of the freedom that it creates to explore, organize, and communicate. Hotspot Shield enables access to all information online, providing freedom to access all web content freely and securely. Secure your entire web session and ensure your privacy online; your passwords, credit card numbers, and all of your data is secured with Hotspot Shield.

WiTopia is an excellent VPN service.

Freedur provides anonymous surfing, web proxies and VPN.

Global Internet Freedom Consortium
GIFC partners have developed many anti-jamming (anti-censorship) products.

Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security known as traffic analysis.

Psiphon Open Source
Psiphon Open Source is a stand-alone version of Psiphon software available for free download to anyone. Run your own server, invite your friends, build a community, provide free and unfiltered Internet access to the world.

With Freegate, you can help Internet users in China to access the Internet faster and more stable. Many users find that visiting oversea Web sites with this software is as fast as visiting local ones. A unique encryption and compression algorithm is implemented to make users network activities secure and efficient.

ipredator is a free VPN service.  If you were lucky enough, you might have gotten a beta invitation.  Hopefully, when it comes out of beta, everyone will get access.

It’s Hidden
ItsHidden.com is an encrypted VPN, based in Amsterdam.  There is a free and premium version for you to choose from.

Although Tor is free, it is slow.  VPNs are much faster, but will cost you a little bit each month.  It’s up to you as to how much you can afford.

Security-in-a-box, Anonymous in Iran, and Global Internet Freedom Consortium all have useful tips to hep you get started.