Why does snapshot load when viewing frontend?

Hi there,
I am doing alot of speed optimisation on my site at the moment and one of the last plugins that is causing about 1/4 of overall plugin load time is the Snapshot plugin- its causing about 0.2 secs delay.

I know that doesn't sound like much but now I have optimised everything else out of 29 plugins this is now causing a quater of the server side delay.

So I was just wondering why Snapshot loads at all when front end pages are loaded?

If this is an oversight please can you let me know what I can do to modify the code to prevent it running when pages are being viewed from the front... (I am running multisite btw)

Thanks in advance

David