As noted on Stoa, there are clear signs that the PHI Greek inscriptions (that were previously only available to researchers on CD-ROM) are going to be fully available online soon. They are still arranged by region. This will be great (if you like inscriptions, that is, which you should).
UPDATE (July 27, 2008): The PHI website is fully functional and working well these days, but at a new address:
Thank goodness for the availability of all of these Greek inscriptions online. It has made my life (in writing a book right now) much easier. Thanks to Fritz Graf for noticing that I had an old dead link here.