Is there a way to prevent guests/spiders from using this?

Such a cool hack! Thank you much! :D

What would it take to have the option to only view new threads / posts in subscribed forums?

Thanks for fixing the last post issue on 3.5.

How would I go about parsing the posticons of the thread in a new column?

If you check the thread in the 3.6 area, you'll see code for this in the first couple pages.

A change to the query to look only at subscribed forums.

It would require changing the vaispy.php and va_spy.js scripts to add the new icon field, determining the url to it and passing it as part of the XML feed and then using it as part of a newly formatted table. Not trivial; but do'able.

Thanks, I will take a look at them and see what I could do :)

I've done this in the 3.6 version; but haven't done it for 3.5 as yet. Waiting to make sure the 3.6 version works as expected all around with new changes before porting them back to 3.5.

This would be HOTM material if there was an easy way to template the output.

It's definitely HOTM material anyway, but yes, a template would make this great hack even better.