I have a Gingerbread 2.3.4 powered Nexus S and I recently got some writable NFC tags. So far I can read them as blank tags, but I couldn't find a way to write data to them.

All my research has lead me to this article: Writing tags with Nexus S from January (before 2.3.4 release).

How do you write NFC tags inside your application, using your Nexus S? Any pointers?