Try Googling: free animated GIFs.
You can find funny animated GIFs online at the Gif Bin website. New funny animated GIFs are uploaded daily. Once on the website, you can comment on GIFs and sort the GIFs by categories such as most viewed and top commented.
A good place to find animated GIFS is the website forgifs. Heathers Animations is another good source for animated GIFS as is Animation Factory and AnimatedGif.
yolo.com
Yes you can add animated gifs to linkedin. You must convert them to the same format as a picture and upload like a regular photograph on your account.
Yes it is!
Go to deviantart.com , there should be some animated gifs. Also, try on gifsoup.com
Use image editing software.
The new recently enforced policy of Twitter to no longer allow animated GIFs affect mostly people who have tried to add a GIF to their profile after the policy was instated. For individuals that already had an animated GIF they will be allowed to keep it, but if it is ever changed, the individual then can no longer use an animated GIF.
Facebook is a good place to start... or just Google "gif"
Yes. You can use them as 2 images in an animated gif. To do it you need an image editor that supports animated gifs.
YouTube no longer supports animated gifs, either in banner even in avatar.