Running out of storage on your iPhone? Besides deleting a whole bunch of stuff and using weird weird tricks to free up storage, there's now another easy way to get back precious digital space...if you're a Twitter user. The latest version of the Twitter iPhone app includes settings to delete cached "media storage" and "web storage" files. Depending on how frequent you use Twitter, the size of these cached storage files will vary. For me, I was able to regain over 1.1GB of storage clearing both.