http://www.flickrslideshow.com/
- Easy to use by adding a flickr account/gallery to the form
 - Seems that a square works best, e.g. 500x500 pixels or smaller
 - Very simple layout, one image at a time and you can see thumbnails when hovering
 - Clicking on a photo brings up any information on the photo's flickr page
 - http://www.flickr.com/help/blogging/#2937
 
http://snapwidget.com/
- Easy to set up, just fill in a form
 - There are a few nice instagram apps around, but just remember the original photos are mostly phone camera quality
 - SnapWidget seems to be made for Instagram, looks very nice in a sidebar
 - With this I could make the koffiafilmfest instagram gallery but the other apps require you to be the accountholder
 - Clicking on the photo will take you to a new webpage with all the thumbnails in the slideshow, i.e. it takes you to that instagram page
 
Slidely
http://slide.ly/
- Need to create an account
 - instagram, flickr, facebook and upload from computer
 - can add youtube audio; special effects e.g. snow
 - easy to use, can be updated with new photos and an integration between photo platforms
 - Works as a video so you can't really click on it, the youtube video you use for audio also shows up in the corner
 - Probably not really what we're looking for if it's to showcase film posters
 
Test Run by Slidely - Slideshow videos
Photosnack
http://www.photosnack.com/
- instagram, flickr, facebook and uploads
 - a few different slideshow effects s e.g. fade, chain effect
 - watermark from photosnack
 - seems to load a bit slower than the others
 
I also found one called Juicebox which looked professional but you need to create your own thumbnails
- Thumbnail design is embedded into the gallery, the slideshow itself can be viewed in fullscreen
 - Lite/Full versions available, the limitations to the lite version include max 50 images, no social sharing support
 - Seems like a bit of hassle because manually you need to make your own thumbnails or use a third party plugin e.g. photoshop, lightroom, picasa
 - http://www.juicebox.net/
 - http://www.juicebox.net/demos/lite/embedded/