Cal Evans has posted a list of all of the Twitter-ers (?) out there in the PHP community and links to their pages.
The PHP community has an active twitter presence. If you use twitter, come and join us. Here I've listed all of the community memeber's accounts that I have and that have given me permission to.
Scroll on down the list, see who you haven't already added and check out their Twitter page - then following is just a click away!