Seesmic is a free Twitter app that is like UberTwitter but without the ads. The service has been around for a little while now and they recently announced their partnership with yfrog to offer pics.
One of the upsides of the app is that it offers one click URL shortening, but as a downside, it does not offer Tweetvid functionality. If you’re a big yfrog user this could be for you.
UPDATE: Sorry about that, you can change the media provider to use Twitpic in the settings.