It's been around since fall last year maybe... I loved it when I first started it, but unfortunately it's not really worth it for me anymore.
1) Last time I checked, it doesn't work with ManyVids since they use a Captcha.
2) Gifs that work for one site may be too large for other sites like ELM.
3) Categories aren't the same for all sites.
4) It doesn't add keywords/tags, so you still need to go back into the sites and add them.
5) Some clip sites are concerned about their security.
It's really too bad because I had high hopes for this site when it first started. It would be nice if they addressed these issues.