You could manually set your user-agent string to a more polular one (IE on Windows 7?). There are several browser extensions that allow you to set UA string manually for Chrome and Firefox.

However, an adversary can also fingerprint your OS/patch level based on packet structure[1][2] - which can't be easily changed. This will add more identifying bits.

1.http://nmap.org/book/osdetect-fingerprint-format.html

2.http://www.windowsecurity.com/articles-tutorials/intrusion_d...