You right, my apologies. I'll fix that now. Would an automated contract be more fitting?
Also, I dont just mean trades for SBD and Steem. I mean anything, from sponsoring someone with delegation if they give you some SBD within x days to automatically paying someone $0.01 for each upvote they get as long as they advertise your product.
The term "automated service" would be clear. Technically what you are describing could be done with scripts on some server using Python and Beem or it could be done also with node and steemjs.
Steem transactions are composed with multiple operations. For example, you can have two posts in a single transaction and if one post gets rejected by the blockchain for one reason or another (say resource credits too low), the other one would be as well.