Posterous has released an update to its utility for posting photos and videos to Posterous.com adding background uploading on multitasking-capable iOS 4 devices and updated graphics for the iPhone 4 Retina Display. PicPosterous allows Posterous users to upload photos and videos to Posterous from the camera or the device’s saved photos library, either creating new albums on Posterous or adding photos to previous albums. Users can also delete photos from albums, geo tag photos and videos during upload, and manage and create multiple sites and albums. Uploaded videos are converted and stored by Posterous in both Flash and QuickTime-compatible formats allowing them to be viewed in a most desktop and mobile browsers. PicPosterous also supports HD-quality videos when recorded from within the app itself; videos selected from the device’s photo library remain limited to VGA quality. New users can create a Posterous album simply by submitting pictures with no account required, or optionally register on Posterous.com to manage multiple sites, create private albums and automatically post updates to other services such as Twitter, Facebook and Flickr. PicPosterous is available from the App Store as a free download.