- validate all input properly, encode and quote all output properly

- grep FIXME -r .
  - encode all the JSON properly

- Work with more (all) FOAF profiles out there

- Browsing of more than 20 latest posts

  - Preferably faceted

- Take timezones into account when sorting by date

- Admin interface for deleting bad data

- Better authentication methods: list of API keys, base URIs, ...