See http://stackoverflow.com/questions/8719732/does-ambit-really-helps (the link is for 10k users).
The tags are service, training, power, energy, rates. It's presumably spam, but that's not the point. I claim that at least four of these tags are either noise or equivalent to off-topic. We have so much noise in the tags that the rep limit for creating new ones has almost no effect on preventing this sort of thing.
Perhaps limit low-rep users to 2 or 3 tags?
To clarify the burr under my saddle ... The tags of a question should not make up a sentence. A question with a long dribbly list of common word tags isn't helping anyone. And that list is a pretty good symptom of a pretty bad question. One solution is to control tag inventory, by discouraging tags that are simple common words. Even if they have technical semantics, they are so ambiguous as to be useless for search. 'power-architecture' or 'power-shell' or 'power-management', not 'power'.