How come so few photos show up in my Photostream?

[iHavequestions]

It used to be a lot more... Like in the thousands. Now it's in the hundreds. Why?

 

[FoxFifth]

Possibly because of the following quotations from http://support.apple.com/kb/HT4486

Does using My Photo Stream substitute for using iCloud Backup or iTunes to back up the photos in my Camera Roll?

No. Photos in My Photo Stream are saved on the iCloud server for 30 days. To save or back up these photos, you must copy them from My Photo Stream to your Camera Roll on your iOS device. You can then back up your Camera Roll using iCloud or iTunes.

How long are My Photo Stream photos stored in iCloud?

The photos you upload to My Photo Stream are stored in iCloud for 30 days to give your devices plenty of time to connect and download them.