how can they be so much cheap?
I'm not thinking to migrate from my nanos* and standards 2GB** Linode vps's as they running great but...
* 5$ month 1GB ram + 25GB without automatic backup
** 10$ month 2GB ram + 50GB without automatic backup
eva2000 what do you think about them? it can't be all that ram and disk size guaranteed... isn't it? IMHO they have to overbook.
If you want in Europe i can advice Strato (Deutch language) https://www.strato.de/server/linux-vserver/ but there cheap. 8 cores, 32GB ram, 800GB ssd, traffic unlimited and 500 Mbit connection and Plesk control panel its 15 euro a month. I’m a customer in Netherlands and its great cheap and good.
Just wondering how expensive the photo hosting would be with cloud services like Amazon AWS and azure etc.
You need to monitor your traffic--looking at what your bandwidth is and how many requests are made for photos--and rummaging around in galleries. Several tactics limit crap bandwidth usage. The first and most common is to limit views to logged-in users. The second is to use your server-side lists (including the .htaccess file) to shut out crawlers, bots, and spiders from accessing files.
Using various gallery controls, you can limit how much members upload. A slick tactic is to allow a reasonable amount for free, and then charge a premium subscription fee for greater upload and access. Plugins are available to accomplish this. This is how sites such as photo.net operate.
Once you have eliminated crawly-creepies, the access to S3 and DO become pretty reasonable, and can easily be covered by the cost of membership subscriptions--with enough left over for license updates!