I own an iGo Juice Adapter but am having some real difficulty finding
technical specs for the various tips that are available for this
device.  (The iGo website, as far as I can tell, is a disaster).  I'd
like to power a few electronics items I own that are not explicitly
supported, but without the ability to run down the voltage/etc. specs
for each of the available tips I'm really flying blind.  For example,
the portable DVD player made by Panasonic DVD-LA95 doesn't have its
own tip - but maybe one of the other tips would work?

Would love to see a list of all available tips with relevant technical
info (i.e., not merely a list of compatible products for each tip). 
Would also love to be pointed in the direction of an online forum
community where I might be able to find more specialized help for this
product - maybe an A/V forum where people have inquired about these
kinds of compatibility issues in the past?

I pulled these off igo's site a year ago.  All I've got is cell
phones, pdas, and laptops, and it's just a list of compatibilities. 
Not exactly the answer you were looking for, but hopefully better than
nothing.

http://home.comcast.net/~madcow3417/igo/

Yes, I'm having the same problem with the igo site.  It's totally
useless if one is trying to figure out the right tip just by using tip
specs.

You can go to http://www.powerstream.com/lta.htm to see what other
products use the same voltage and connector as your device and then
compare that to the iGo compatability page.