Yfrog Lets You Post Media to Twitter Via an iPhone MMS Text
Yfrog now lets you send photos and video to Twitter via an MMS message on the iPhone, which is in accordance with the Apple device’s new MMS capability going live today.
If you’re new to Yfrog, sign up for an email address on the site, which you can do through OAuth. After that, open a new text message on your iPhone and select a photo or video to upload. Then just type in your Yfrog email address and hit send. You can even type in your own message within the MMS text to add a caption to your picture or use the “@” reply function to notify someone that you uploaded the photo. Other than its slight sluggishness — it took about a minute for the photo to finally go through — the main downfall of Yfrog’s MMS capability is that “Multimedia message” is written before the link to your photo, which isn’t very aesthetically pleasing. Overall, the new Yfrog capability works just as it promises, but for now I’ll stick with Twitpic and Echofon.

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Pretty cool. Does kind of suck that they have to put that prefix on the message. Makes for kind of an awkward post. But none the less, crazy how twitter is now the jumping off point for new start ups. =)
Just some disclosure, this service is run by ImageShack, a company which has been known in the past to disregard their own privacy policies:
http://digg.com/security/ImageShack_founder_violates_his_company_s_privacy_TOS_Why_Just_for_fun
http://floydfe.wordpress.com/2007/10/11/imageshack-founder-violates-his-companys-privacy-tos-why-just-for-fun/