SEM: Google Adwords vs SEO| comparison: | Sponsored links | Positioning |
|---|---|---|
| charges | for every click, so-called PPC - pay per click |
only for a day when a web site is being positioned |
| payment | in advance | down payment |
| an average cost of customer acquisition | high | low |
| promotion of a less popular words | cheap | slightly more expensive |
| convertion rate | high | very high |
| time of waiting for a results | 1 day | a few weeks or more |
| keywords | accordig to Google AdWords rules | unrestricted |
| number of keywords | unlimited | limited |
| The possibility of description edition | high | limited |
| interference with a web site | none | usually minimal |
| geolocalization | wide spread | limited |