As a +10k-rep user on SO, I use the various tools to identify a lot of spam. There are two lists (new posts by new users and new answers to old questions) which are especially useful for tracking down posts that are spam.
These lists are so useful, in fact, that I can reach 5 spam flags in under an hour. At this point I need to resort to using the flag for moderator attention option.
Now, I'm a fun-loving guy and when I'm given a prompt with a whole 140 characters, I'm going to fill it. If, after having reported the issue, I have characters left over, I fill the remaining space with little quips about various things. Some moderators have taken issue to me doing this. It is by this civil protest that I have gained support for my proposal.
And so I say that if I had more spam votes to complement my ability to find more spam I would not have so much opportunity to annoy the moderators with my poetic-albeit-terse reports.
The bottom line is that +10k-rep users have the ability to find more spam than we have flags to report it with. This is a problem as it's involving moderators when it doesn't need to.
Save the moderators from my writing: give us some more daily spam flags. That and Marc likes vanilla ice cream.