Why? All the reasons listed in why. This is the key first step to joining the indieweb.
Examples of domains being used IRL for disambiguation
Two employees at http://corp.oz.com/ were both called Sveinbjörn — one held sveinbjorn.is, the other sveinbjörn.org. A common company practise was to reply to “where’s Sveinbjörn?” with “dot is or dot org?”— Brian Suda
Free Domain Names
There are some top level domain names who’s registrars give out domain names for free. It’s not currently known what degree of control users have over these domains, or whether or not it’s viable to use them long-term, but they have the potential to open up the possibility of having a space on the indieweb to people who either can’t, or don’t want to pay for domains.
Freenom offer a developers plan which comes with an API allowing programmatic registration and administration of free domains. This could be used by organisations offering content hosting services to simply have a “domain name” field on the registration form, and automatically set it up, preventing users from having to worry about payment or technical DNS configuration.
Free Domain Registrars
The free domain registrars that currently exist are:
These registrars were given exclusive rights over their respective country's TLD in order to generate revenue for the local government. Despite registering domains for free, they have alternate revenue streams that may include (but aren't limited to):
In exchange for a free domain, users must agree to a Terms of Service that is comparable to those of most silos. The terms for the revocation of a free domain may include displaying objectionable or illegal material, showing adult content, providing information on illegal drugs or other contraband, displaying someone else's intellectual property, using the account for spam, etc. Many of the terms are very broad and may be prone to abuse, so using a free domain to protect your voice and identity in a dangerous circumstance is not recommended.
It should be noted that all of the existing free domain registrars use Freenom as their backend for handling account registration. As a result, all have a similar feature set:
Namecoin is a bitcoin fork, originally founded to be a decentralized DNS network for .bit domains.