http://depositphotos.com/favicon.ico
favicons are almost always domain.com/favicon.ico or .png or .gif

For everything else, there's "View Source"
Usually "View"/"Page Source" in firefox, ir CTRL-U

All you need after that is to choose a login page, an open page, and the tricky bit: write the regex

Found the icon by trial and error   and forgot all about view source ! 

Ok, here goes !!   

Any way to Remove the polls from my list, if I decide not to keep and use them ??

p.s.  looks I like I now have a share in a Polish (?) website !? 

Aye it's not including the custom pollers in the total value on the refresh button yet, as I'll have to add into the preferences the ability to select which ones you'd like to include, and then validate that they are in fact numbers
You can disable buttons on the toolbar by using the checkbox for the custom poller entry, or if you'd like to remove it completely: Ctrl-Shift click (Cmd-Shift on mac) on the Edit button for that poll.

Probably
I have general rules of thumb for things where there isn't room in the interface for a specific button to a function.

• Tooltips should be everywhere possible.
• Ctrl/Cmd is for extra functionality (ie: more control) The keyworder for example now limits the 'Copy to Clipboard' to only the first 50 keyword if you hold ctrl
• Shift is always for a change to the way that functionality works (ie: it's a shift in what it does).
• Ctrl-Shift is always destructive.

I always try and avoid using Alt as most OSes use it for something system-wide and it's position close to the space-bar makes it unnatural to reach (one of the main reasons I don't like my Macbook is because of the Cmd button placement).
If you need to do something, and there isn't a button for it, try mousing over other buttons. If it's still not there, let me know and I'll add it