Immediately after answering a question on ambulance response time targets, I saw a blatant spam posting which was immediately pounced on by our brilliant community.
Just wanted to praise those who acted so quickly to take it down. When I downvoted and flagged it, the downvotes jumped to -7 and within seconds the post was removed.
Excessive promotion of a specific product/resource may be perceived by the community as spam. Take a look at the help page, specially What kind of behavior is expected of users?'s last section: Avoid overt self-promotion. You might also be interested in How to not be a spammer.
Keep up the good work everybody and flag the spam like we did here.