WhoIsHostingThis.com has launched a TwitterBot that provides people with information on the host for any given domain, and the link to the host is an affiliate link.
Twitterbots let you perform ‘command line’-style operations in Twitter. You typically send a message, and get back a response via direct message (DM) or an @reply with the information requested.
Queries on domain hosts can be sent as an @reply to @WhoIsHosting or a direct message to the same address, followed by a domain.
A couple of minutes later, you’ll get a direct message back with the answer and a link for more information.
Neat combination of a useful service and affiliate links.
More details at http://blog.whoishostingthis.com/2009/01/19/whoishosting-twitterbot/.