I really hate it when web sites make you wait to read their content because the web page is waiting for an ad server or google analytics server to respond to their request to display an ad or track a visitor. The site owner may view these tools as important to their site, but as a user I do not. I came to their site on the 'promise' of certain content, not to exercise their site's implementation... and if the response is too long (10 seconds or so) I find another web site to get the content from.
This is why I haven't (until now) implemented Google Analytics on my site. A user comes to my site for some content they are interested in, not to enable me to track my user population. So what's change?