If you’re developing applications for MySpace or just thinking about it, the social networking company has made it easier to get the word out about and popularize your apps. An update to the fledgling MySpace Developer Platform released last week lets app builders add messaging and posting capabilities to their MySpace apps.

Implemented in a “Post To” function, the new feature “lets apps provide content to users—anything from text, to markup, to media—and allows them to post it in a bulletin or blog,” said a MySpace spokesperson in an e-mail to me on Monday. The content also can be saved to their own profile or sent to a friend as part of a MySpace message or comment, she said.

The Post To function is meant to give MySpace users more ways to connect with others and express themselves and give developers more ways to spread the word about the apps they create or use. “Not developers can let users brag about their high scores in a bulletin post or challenge a friend to beat that score in a message,” she said.

Post To also supports MySpace bulletins, which lets users broadcast a message about their apps, but only to one user at a time for now. The company is thinking about relaxing this restriction, but is understandably cautious of opening the flood gates on people’s inboxes.

MySpace also changed the default sort order to “most recent” on MySpace Apps, its application gallery page. That’s a means, it says, of “giving MySpace users more variety in the apps they see when they come to the gallery. This gives newer apps more exposure and opportunities,” said the spokesperson.