Besides Cookie Stuffing and Parasites, How Else Can You Scam in CB?

I myself have seen a huge drop in sales when it comes to clickbank as many others. What bugs me the most is I can easily go from a $2000 week to a $200 week in a drop of a hat without any explanation. During those slow weeks I see within Google Adwords conversion tracking that it's showing I'm making the same amount of conversions as a good week (yet in CB I am showing PHK all in sales). For instance, last weekend I ran my ads and it showed I made 7 conversions in Google. I login to CB and check and I've made 2 sales. This really PHKin sucks as I am losing alot of money at that conversion rate. I am pretty sure the 2 people that purchased didn't hit the refresh button multiple times to double count conversions in Google, so what else could this be?

Does anyone know how else someone else can steal sales besides cookie stuffing or having an "infected" merchant with a parasite/spyware? Any help would be hugely appreciated!

google conversions most probably report the no. of hops and not sales!

Yep, as far as I know from general knowledge (this means not from experience), Google is only able to track inside your site and where the visitor goes when he leaves your site, not where he goes from that second site.

As it comes to conversion tracking, again from general knowledge, I think it's like this scheme:
The user goes from mysitepage1.html to another site (this may be the ClickBank purchasing page or something similar) and Analytics tracks that, then if the user completes the offer he returns to mysitepage2.html and Analytics tracks that as a conversion, but that doesn't mean that the user did not went directly from page 1 to page 2 without going through ClickBank.

I may be wrong though...