Display "serfs" Hot keywords Ranking history.
Once upon a time, app developers were the toast of the tech world. Now that there are 140000 apps in Apple's app ...[source]
| Date Time | Rank | Info |
|---|---|---|
| 2010-03-06 04:52:02 | 20 | Once upon a time, app developers were the toast of the tech world. Now that there are 140000 apps in Apple's app ...[source] |
| 2010-03-06 03:52:20 | 10 | The usual serf (not including slaves or cottars) paid his fees and taxes in the ...[source] |