Google Spider is following affiliate links to my site

I've never noticed this before....

[wingslevel]

Was looking through my logs and noticed a bunch of affiliate links being hit on by googlebot.

I thought gbot didn't follow these.

[jatar_k]

links are links, unless by affiliate links you mean something other than a regular link

[wingslevel]

sure, affiliate links are never direct links - always indirect - what i am saying is that google is following indirect links to my site.

[jimbeetle]

How do these indirect links work? Are they through a third-party site?

[jatar_k]

js?
redirects?
cloaked?

among others

hard to say without an explanation of the type of 'indirect'