Agree, I had already implemented this :)
Things not yet done are: implement queued refresh (so that limited number of thumbnails are refreshed simultaneously) and appearance preferences.

Oh, so you could search just transparent logos. Good idea! If thats what it is...
--------------------------------------------------
If I make a request for logos, make it on a transparent background.

> in the appearance settings..lets say i put "transparent" in one of the fields - where does this word go; which file? is the field some sort of variable?

This value is stored in preference (about:config) variable extensions.fastdial.theme. Then on runtime it's applied to object, representing css. Is this what you're asking about?

telega, exactly what i was looking for. thanks

zedomann,
transparent logo can be browsed by going to logos in top menu, then select Transparent as the Theme - then click Submit
http://userlogos.org/logos/new?filter0=keyword&filter2=47

go to:
firefox profile\extensions\fastdial@telega.phpnet.us\chrome\content

open the following file in Notepad or WordPad:
fd.js
(or just fd if extensions are disabled)

Then search for this code:

url = "http://userlogos.org/search/node/" + encodeURIComponent(host + " type:logo");
(line 571)

and change it to:

url = "http://userlogos.org/logos/new?filter0=" + encodeURIComponent(host) + "&filter2=47";


UPDATE: telega, is there, was there,or will there be a function for the Theme field in the Appearance Tab? looks like it could useful