It seems like Geohotz's exploit really did ignite the Ps3 scene!
Definitely... I'm sure in weeks or months to come a lot of the "whispers" that are currently happening behind the scene will surface publically if they prove true.
There are already unconfirmed reports that the exploit is reproducible on PS3 Debug units via XMB with no memory line glitching required through software which would be interesting.
Other rumors include calls like cellUsbdAllocateMemory and libusbd may be exploitable, but right now these are just IRC rumors and remain unconfirmed.
Slowly the PS2Dev Wiki is being updated also, something to keep watch on: