I would say Ebots and Newletter.

I have received 3 types of e-mail from Renderosity.

1. Ebots on Forum Notifications - Nothing Noticable there
2. Newsletter - Noticed Spam along with the Newsletters
3. Receipts - Nothing there

On Ebots from Gallery postings, I have very few people I watch and they have been posting elsewhere.

I will see if there is spam on the Vendor notifications though I get those mostly when motif resets his sales.

I looked over other possibilities as well. When you consider that not all e-mail that comes from Renderosity is affected, it makes me wonder who has the tunnel vision. If there was an outside Zombie, you would think that all notices would have spam attached. There are patterns emerging that are making me wonder if there is an infected/effected script somewhere.

As for there not being more people in this thread, only the vocal minority uses the forums.