found this list of domains owned by google some are really strange, like the number ones http://www.pronetadvertising.com/articles/googles-growing-list-of-domains.html
No, they do own them but they use a third party service to disguise the fact. Obviously they wouldent want to be associated with googleporn.com but neither do they want anyone else to own it.
a lot of the deal with owning a lot of domains is not to use them all, but just to stop others from using them. Or to cope with mistakes in the user entering a url - such as gogle.com
googleporn - excelent but is isy too understand that they have to bought a lot of this type of domain.
what a big deal for a 'big name' to own those domains... no problem for them.. and i think there's a lot more ... p/s; wondering 'me' how to manage even a 100's of domains...