I can’t really comment on Stuffed Tracker and high traffic sites, because our site, http://www.gurock.com, isn’t really “high traffic”. We have < 10000 unique users/month, so this isn’t really useful. But why not contact the developers of Stuffed Tracker directly? Maybe they can share some high traffic reference sites that use Stuffed Tracker.

I’m a new ST customer and I would like to know your opinion: is Stuffed Tracker suitable for heavy traffic site?
If it’s possible – can you provide some numbers, like average users quantity and DB size… please, I would appreciate that. No URLs needed, it’s up to you.

Thanks!