I came across 3 or 4 experts-exchange pages today when looking to fix a small apache issue.
After that, you can use g <something> in the address bar to search for something with a sane query.
From the front page: "Filter spammy websites from search results"
exactly what I do with Tek-Tips...
Greasemonkey (or Opera user javascript as I believe that's mostly compatible) script to remove experts-exchange results from any google query. Saves you from having to use a different search or use -site: stuff.
Should be easily extendable to hide/dim/highlight/whatever any sites you want to see less/more of.
Also, Jeff mentions it in his intro to StackOverflow Coding Horror post (http://www.codinghorror.com/blog/archives/001101.html):
Stackoverflow is sort of like the anti-experts-exchange (minus the nausea-inducing sleaze and quasi-legal search engine gaming)
edit: Oh, I was looking on a page that had no answers. Didn't realise that at the time.
If you receive a search result on Google that points to an EE question page, you can see the answers at the end of the page. EE tricks casual visitors into thinking they need an account by putting a long list of things at the top of the page and the real answers all the way at the bottom. This way Google ranks the question/answer but people think they need to buy an account.
Example Google Search (Click 2nd link): http://www.google.com/search?hl=en&client=firefox-a&...
note If you visit the link directly, the real answers disappear. Yet another sneaky EE trick, this time preventing bookmarking/direct linking.
experts-exchange gets most of its traffic from gaming Google. It isn't that useful of a site.