There are over 400 malware programs in existence, we can't target them all, hell I don't even know them all. One vanishes and 10 more come to life.
In your stats look for these traffic sources:
quickbrowsersearch
abcsearch
exactsearch
starware
giantexplorer
searchscout
mywebsearch
mysearch
many variations of of "mysearch" etc. all adware/toolbars
coolwebsearch - this one has MANY names EXTREME MALWARE
look2me
blowsearch
funwebproducts
and zango of course
and probably many I can't think of right off the top of my head right now.
If they're not spyware/adware/malware, they promote downloads on their sites. At least one of the above had a driveby install at some point, don't know if they still do, I don't get those anymore.
That means as soon as you hit the site, it downloads on your computer without your knowledge or permission. And the adware program varied too, not always the same, and sometimes they're bundled, which makes it quite a fun visit!!! It could keep you busy for a few days...
If you use any ppc, including Google and Overture, you're in for quite a surprise! Some of the worst with adware affiliate partners are:
Miva/Findwhat
Enhance
7Search
Epilot
Searchfeed
Overture
and I'm probably forgetting one or two...
Watch Google closely, they don't allow adware to show their ads, but once in a while one of them will silently slip in as a publisher. Don't forget that it's "good business" for any ppcse to use adware, they make more money. However, with Google Adwords, your listings will be hijacked by adware infested surfers if the keywords or URL's are targeted by scumbags. Adware isn't picky, they hijack everything everywhere from anyone if the keyword is right.
Keep a good eye on your stats and weblogs. Some of them, if you spend enough money with them that is, will stop adware affiliates from showing your ads... not permanently though. Keep an eye out, because they will find their way back in and then you have to contact the ppcse and bitch again.
That should give you a good idea of lost traffic and sales. Might be enough to make some of you sick.
Missie