I never had any pop-ups.

To avoid ads you may try:
http://www.webwasher.com/

WebWasher is a powerful filter program
for Web pages, originally developed by
Siemens: it is installed on your PC or
server as an add-on to your browser.
Unwanted content - such as advertising
- is not even loaded via the network.
WebWasher also avoids unnecessary
reloading of web objects and
de-animates images. This saves you up
to 45% of the data which are
transmitted. Your browser displays
Web pages practically free of
advertising.