In the chat section of the slquery.com site I provide a simple iframe link back to the second life friends online page. You can find this information when inviting friends to chat with you from inside Second Life via the infoStations. However, some recent changes to the SL site prevented the iframe from working anymore.
I searched all over for a solution and finally found the information I needed. So, I thought I’d share it here with anyone interested. This is also how most of the other SL "Friends Online" widgets and products provide this information. Note that you still must be logged into the secondlife.com website to see your personal friends online list.
The correct URL is now: /community/friends-inner.php.
For the curious, the old URL: /community/friends-iframe.php.