Some places like the one mentioned on this google report: [Report] can be dangerous. And most of the time those sites are promoted on search engines (like google search) with different names (example: my_search.annoying.inform.com, the_beast_of_my_search.annoying.inform.com) so you can be confused and enter.
The next link provides an extension to google that helps you with that problem, and is for FREE.
Personal Blocklist (by Google) - The Google Chrome extension adds a Block domain option next to each search result.
The next links provides a helpful tips to protect your self from those predators.
- Tips to avoid crap-ware: http://www.howtogeek.com/howto/6391/avoid-crapware-with-giveaway-of-the-day-free-software/
- http://greatis.com/blog/search-redirecting-11/remove-vat-spy-software-informer-com.htm
