There are some very good sites from Canada:
The aphasia group called "Commclub" in Queensland. From here, you can also reach several other good sites:
This site also contains a good list of journal articles of interest to speech pathologists:
A great site is the one for Connect in London:
Just click any of the pictures to open up a window to the site.
Speakability is also based in the United Kingdom, and is a good site: