Twitter is now letting users send photos via text messages. In a post on the Twitter blog, the company announced that you can enter the text of your tweet as you normally would, and attach a photo and send it to Twitter.

There is a list of short codes for sending texts to Twitter here.

“Sending a text message (or SMS message) has always been one of the easiest ways to share information and keep up with your favorite accounts on Twitter,” the company says. “SMS is currently available in about 80 countries and nine languages and usage continues to grow. Nearly four billion SMS messages are sent and received on Twitter every month.”

The feature is available on AT&T, Verizon and Cellular South in the United States, Vodafone, O2 and Orange in the UK, Vodafone Italy, Rogers Communications in Canada, VIVA Bahrain, and TIM Brazil.

Twitter says it will work with other carriers to expand the feature.

Clearly Twitter is getting serious about photos now.

Tom Munro, CEO of Photobucket, which powers Twitter’s main photo feature, recently told us that mobile photo tweets will scale rapidly in the coming months. This new feature should certainly help with that.