EMD and .tk domain .

Hello,
I just started to wonder how does google 'look at' the .tk domains . It seems quite easy to create a software that will register loads of the domains one by one.
Do you have any experience ?

I once thought about .tk domains myself, but when you googl... khm.. search the web about it, you'll find out that many ISP's have .tk domains blocked for fraudlent use, so in my opinion it's not the best idea to try to get traffic to these domains even if google was fine with it.

.tk are pretty much useless imho. :/