Note: This is an advertisement, but very targeted and therefore interesting for forum visitors.

Wikify @ appointment.at
http://wikify.appointment.at/

Wikify is a web-service allowing everybody to enrich their arbitrary text with links to Wikipedia.org. In other words, it make hypertext from your plain text.

This is a Web 2.0 online tool and has an API so it can be used in other applications.

Question: what do you think about it? Is this useful for anybody writing a text or it's just a useless toy? Which features would you suggest?