I use (listed in order of preference)
Phereo 3D
Phereo 3D (phereo.com) looks like a good 3D site.
Pros:
- Create your own folders.
- Supports a wide variety of 3D image modes.
- Has an Android app that supports various 3D modes *including* glasses-free fullscreen display on 3D phones like the LG Optimus 3D and HTC Evo 3D.
- great user interface
- Free accounts. Limited to 300MB uploads / month.
- One and two year "Pro" accounts now available. NZ$32-ish for one year. Unlimited uploads.
- Supports restricting adult content by default, but you can disable this for your account.
Cons:
- the site in "beta"
- Photos only. No video.
- can't adjust parallax
3dporch.com
- stills only
- reasonable viewing size
- multiple viewing modes supported
- free membership
Cons:
- hard to find anything.
- no tags or folders
- larger viewing sizes are full resolution and usually larger than your monitor.
- default viewing format is "Wriggle" which is intensely annoying
start3d.com
- stills only
- multiple viewing methods supported
- supports folders
- can toggle between image sizes
- can order hard-copy lenticular prints (US$35 each)
- free membership
Cons:
- Images you upload are highly compressed and image quality is poor at the two larger viewing sizes.
YouTube.com (not in order of preference - it's in a class by itself)
- 3D video only - not stills
- supports a number of viewing formats
- free membership
3Dtv.com
Pros:
- free membership
- 3D images and video supported
- Lots of 3D formats supported including "interlace" for passive and active 3D TVs and Monitors
- Upload video up to 2GB
- Mobile version of the site looks great a phone screen
- 3D videos and images display properly on 3D handheld devices like LG 3D Max and HTC Evo 3D
- reasonably good social side. including various "props" and comments.
Cons:
- Not a lot of people know about it. The user base seems small and content thin. I hope to change that.
3DVisionlive.com (NVidia)
- free to join
- supports video and photos
- Photos viewable as red/cyan anaglyph, but looks like you can only see 3D video if you have NVidia 3D gear. Not much use if you don't.
3df33d.tv
Pros:
- Is now back up (verified live on 2013 09 22).
- Uses WebGL so Firefox or Chrome are the browsers to use.
- It's possible to align the images in the web browser. No one else does this. It's good.
Cons:
- Closed down from April 2012 to September 2013
- It's the same site, but operating on a smaller network connection....so may get congested if too many people turn up.
************************************
If you know of any others, I'm interested.


