| Keyword / Keyword Phrase | CPC (US$) |
|---|---|
| usiness service voip | 13.85 |
| vonage voip | 12.61 |
| voip business solution | 11.67 |
| voip pbx | 11.65 |
| voip phone system | 11.48 |
| voip pbx system | 11.16 |
| voip business phone | 10.73 |
| business small voip | 10.22 |
Monday, October 4, 2010
Voip Keywords
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