You are going to block this site. This will do the following:
- You will no longer see this site in searches.
- Site will no longer see your site in searches.
- Site will not be able to comment on your site profile.
- Any comments this site has posted to your profile will not be displayed.
Are you sure you want to do this?
I don't think you're gonna get people to switch from gifs, but if you're hosting the image yourself then you're free to convert it. I don't think anyone is gonna get upset if you do that.