While the forum signature panel itself is not brand new, it has never been part of the Live Panel Wizard before so very few people have known how to add this type of panel.
When you are signed into Snapzilla, there is now a new option in the Live Panel Wizard, called 'Forum Signature Panel'. If you select it, it will give you the BBCode to put into your forum signature to show your latest snapshots and have it linked to your list. This will work with any forum that supports BBCode.
Note: the main Second Life forums have most BBCode still disabled for some bizarre reason. You can still use the image portion, but it won't be linked. To add the panel to your
SL forums signature, add just the text starting with [img] and ending with [/img].