| Subject | Feb-08 | Jan-09 | Feb-09 | Growth, YTY |
| One word | 21.04% | 20.29% | 20.48% | -3% |
| Two words | 24.73% | 23.65% | 23.47% | -5% |
| Three words | 21.84% | 21.92% | 21.68% | -1% |
| Four words | 14.53% | 14.89% | 14.98% | 3% |
| Five words | 8.29% | 8.68% | 8.72% | 5% |
| Six words | 4.38% | 4.65% | 4.71% | 8% |
| Seven words | 2.29% | 2.49% | 2.51% | 10% |
| Eight or more words | 2.90% | 3.43% | 3.47% | 20% |
| Source: comScore | ||||