typo-squatting 

say you want to search on Google.com for teletubbies.com, britneyspears.com, metallica.com, linkinpark.com, (or any other website with correct spelling names,) and you misspell the proper name such as mettallica.com, linkinnparc.com, (because you don't know the correct spelling) you are directed to porn sites or spyware.
and most of these typos are done by children who are under the age of 18...see also cyber-squatters

Man1: Let's see if I can get some information on the band "metallica" on "google"....now, how do u spell "metallica", is it 1 "T" and 2 L's or is it 2 T's and 1 "L"...i hope i don't get any typo-squatting porn websites....
typo-squatting

typo-squatting by blthrskt December 28, 2005

typosquatting 

Registering domain names that are deliberately designed to leverage off other companies' trademarks, including those that have names that are incorrectly spelled versions of companies' domains.

The company was accused of typosquatting the domain names microsoff.com and microsort.com.

typosquatting by Nina_Williams August 25, 2006