Tyler Loch the founder of Techspansion has posted the following message on his homepage...
...After much soul-searching (it's not you, it's me), for personal reasons, Techspansion is closing its virtual doors.
The Support Forum and Support E-mail will be available for a while longer to take care of any remaining issues for you.
If you have VisualHub or AudialHub, here are directions on how to back them up for safe keeping: VisualHub, AudialHub, (iSquint is self-contained. just back up the app itself)
Thanks for all your support. It's been a fun ride.
This is a real shame as VisualHub and AudialHub are two of my favourite and most useful Mac applications.