Mobile apps with tagging and categories

It goes without saying that tagging has become big. I’ve always considered tagging, or categories, or whatever you call it, to be important metadata that gives meaning to an item. This makes it easier to sort, find, highlight, and so on, the items in your collection.

Of course, the best time to tag is immediately, when you have the thought in your head as the item is created. Therefore, I want an app that lets me post to Flickr or my blog in the same way as Lifeblog (content-centric posting), but that also lets me tag or categorize the items I post. I can’t stand when I post to Flickr and then need to wait till I am back at my computer to add the tags (Flickr mobile doesn’t let you add tags either pre or post upload).

In a way, Lifeblog allows for tags in the caption field of each item when posting. But, no service provider uses that info for proper tagging purposes. Also, in Lifeblog, you can’t select a category for your blog post. In the current Lifeblog UI it wouldn’t be so hard to have a category field for the post and a tags field for the item.

Are there any client apps out there that let me upload to wherever I want and allows me to create and add tags that the server understands? Are the cool new photo services allowing folks to tag when they capture images or when they send them rather than making them return to a PC? Yes, I talk about the fusion of PC, mobile, and Web. But, in this case, the mobile environment is the best place to do this tagging.