Admitting i am fan of Mobypicture is not new. There are many reasons why, amongst which is the fact that i know the owner of Mobypicture well (full disclosure). But there are much more reasons to use mobypicture as is described more thoroughly here.
What i recently saw that with the latest version of the iPhone twitter client the default picture and video sharing option is not set to Mobypicture. This of course should be the default in my mind but here’s a quick “how to” to update and happily share again with your friends.