your ip is the number your service provider assigns to you, some ip numbers change everytime you connect to the internet and some ip address stay with you for the length of your contract. the ip number is used by the internet as a mailbox number or home address. when you go to google google sends the info you request to your ip address which is funneled to your computer. you cannot physically change the ip address your isp has given you. all functions of the internet require you to have an ip address so the data you send can be returned to your computer with your results.
you can use annoymizers that mask your ip by replacing the ip with theirs. (they simply do what you ask but now using their computers ip) the results are forwarded to your ip.
By using free web anonymizers (CGI proxy) you can anonymously surf the web. You don't need change any settings in your browser or setup any programs!
You can get the full list
here
Anonymouse - a very good free anonymizer. By using this CGI proxy you can anonymously surf web pages, send anonymous e-mails and look at news.
URL (for proxy chaining):
http://anonymouse.ws/
Anonymization - free web anonymyzer. Supports anonymous web surfing, anonymous web seek (meta search by many search engines) and FTP surf - surf anonymously in any FTP server. By using this web proxy you can surf anonymously more than 5.000.000.000 web pages.
URL (for proxy chaining):
http://www.anonymization.net/
Guardster - good anonymizer. Controls cookies, scripts, ADs, images and referrers.
URL (for proxy chaining):
http://www.guardster.com/
ProxyWeb - good anonymizer, can delete Java, JavaScript, cookies and ActiveX. Also this web proxy uses HTTPS (secure) connection - so nobody can detect what you download from Internet.
URL (for proxy chaining):
http://www.proxyweb.net/
WebWarper - This is a popular free web anonymizer. This CGI proxy can pack web pages "on the fly".
URL (for proxy chaining):
http://webwarper.net/
MegaProxy - Free anonymizer can work with HTTPS sites.
URL (for proxy chaining):
http://www.megaproxy.com/
http://www.amegaproxy.com/
www.anonymizer.com - classical free web anonymizer. The most popular of all anonymizers.
Free version of anonymizer.
URL (for chaining proxy):
http://www.anonymizer.com/
http://www.anonymizer.com/services/surf_for_free.html or
http://anon.free.anonymizer.com/http://www.google.com/
Anonymizer.RU - russian anonymizer: this russian CGI proxy has many additional options only after registration.
URL (for proxy chaining):
http://www.anonymizer.ru/
The-cloak - This is a free CGI proxy. This anonymizer supports HTTP, FTP and HTTPS sessions. Can hide referrers.
Requires payment..
URL (for chaining proxy):
http://www.the-cloak.com/
Surfola - cool CGI proxy with many features.
URL (for chain proxy):
http://www.surfola.com/
Proxify.com - Good fast anonymizer that can remove cookies, ADs, referrers and can use HTTPS connections.
URL (for proxy chaining):
http://proxify.com/
http://www.urlencoded.com/ - The better cgi proxy server. It has many different features, inclusive enabling / disabling cookies, all scripts, AD banners, referrer information, browser and OS info and many more.
URL (for cgi proxy chaining):
http://www.urlencoded.com/
http://www.snoopblocker.com/ - Good cgi proxy (anonymizer). It uses 128-bit SSL-encoding. Can enable/lock Java, JavaScript, Cookies, ActiveX.
URL (for creating anonymizers chain):
http://www.snoopblocker.com/
http://www.gunshin.net/cgi-
You can get the full list
here