Brad – nicely done. a few beginner questions:
1. where are you applying this filter? I assume 2 was the field_id?
2. For the web site link (non-bp link) in your example, do users need to merely enter a valid url? just http://www.example.com or what, specifically – I will need to steer them.
3. How would you go about configuring a mailto: link (assuming they were safe behind the login walls form scrapers