is the second spam today for some machinery
Worth noting is that the spam accounts were both unused and sat there for two weeks.
I can't go into particulars about how we monitor these things, as I am sure you understand, but my suggested course of action is to flag the post as spam.
You do not need to edit it unless it contains links (in which case, you may remove the links if you so choose) or offensive language.
You needn't waste your votes on it unless you want to. The only advantage to downvoting/close voting is that it reduces the visibility of the post, which may help protect newbie users from stumbling into some nefarious trap.
The "official" stance is that SPAM should not be downvoted since that moves it away from the front page and fewer users will get the chance to flag it. Since enough SPAM flags automatically delete the post, and also bring it to mod's attention, you shouldn't downvote SPAM, just flag it.
The relevant post from meta.so states:
Because downvoting pushes out off the front page but doesn't remove it. This means that it is somewhat less likely to be seen by other active members who could flag it, and therefore kill it.
Downvoting is for bad, unresearched questions. Spam is just spam, it should be spotted and removed ASAP. Hiding it means it might stick around longer then it needs to.