AdBlock Plus is an excellent Firefox plugin that automatically prevents the display of advertising on websites. This includes banner ads, as well as the sort of targeted text ads that Google has made a fortune through. When using AdBlock, the web is a much more functional, uncluttered place with fewer distractions. I highly recommend it.
At the same time, this site does have Google ads embedded in it.
If people want to use AdBlock and, by extension, not see the ads, I encourage them to do so. Indeed, I think there is a certain editorial advantage that arises from using both AdBlock and Google ads, myself. Since the ads are blocked whenever I view my site, I do not know what is being advertised here. As a result, I am not consciously or subconsciously influenced by the advertising. If newspaper and magazine editors could live in a similar state of disregard, when it comes to who is paying the bills, perhaps there might be a bit more journalistic integrity in the world.