What does "domain hacks" mean?

[arend]

Anyone please tell me whta the word "domain hacks" means? As I do not know.

 

[mis_chiff]

http://www.namepros.com/cctld-discussion/299608-value-of-domain-hacks.html
Looks like you found it

 

[Edward Smeu]

Doma.in

 

[lothos]

It means using the domain extension as part of the word.

examples:
blo.gs
del.icio.us
inter.net
pla.net