Internet Keywords are similar to domain names, and as such they can be registered in a similar fashion. The maximum term for an Internet Keyword is 10 years from the of registration, although a keyword can be renewed for an infinite amount of time after that. You should remember that your internet keyword cannot be cancelled once it has been registered, this is the same as with domain names, and the only way to get rid of it would be to allow the registration to lapse.
When registering an Internet Keyword is is important to ensure that you enter all your details correctly, the reason for this, is that the registrant, i.e. the person undertaking the Internet Keyword Registration will be legally responsible for the name. The contact information should also allow people to contact you if they object or have any problem with your Internet Keyword registration.
The registration process usually takes a few days to complete, and after that your keyword should become visible and active.
Internet Keywords tend to be a good long term investment, and their value to the internet community should grow with time, in a similar way that domain names grew.