I'm seeing something really strange when I upload 15 images at once (and share them with many people). The activities (pushed) are not aggregating correctly, and I'm getting lots of entries for the same items:

![screen shot 2014-05-28 at 18 05 23](https://cloud.githubusercontent.com/assets/109850/3107911/a21ab0f0-e68a-11e3-9eb7-317621778191.png)
![screen shot 2014-05-28 at 18 05 33](https://cloud.githubusercontent.com/assets/109850/3107912/a21e0246-e68a-11e3-95ef-e8ad3a0b0b3d.png)
![screen shot 2014-05-28 at 18 05 40](https://cloud.githubusercontent.com/assets/109850/3107913/a221c12e-e68a-11e3-8b22-a37cf942e1fd.png)

Once I refresh, they are aggregated correctly.