MisterX

When updating through the webpage, tagging is ridiculously difficult. Why do you give me a tag management tool (http://www.livejournal.com/manage/tags.bml) when I cannot actually APPLY the tags to my posts? When I go to make a post, I have to type (or should I say retype) each tag in individually, comma separated. Why not just, oh, I don't know... pick tags from the tag list I created? Seriously. This implementation is bizarrely bad. WTF.

If this site is going to REQUIRE a client to post/edit, just go ahead and require one. But don't pretend you are making a web-based tool and then totally bail on basic functionalities like tagging.

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UPDATE: MYSTERY SOLVED!
The desired functionality is not part of Livejournal, but can be added to Firefox through a Greasemonkey script. Here's all you have to do:

1. Get Greasemonkey if you don't already have it: https://addons.mozilla.org/en-US/firefox/addon/748
You will have to restart to complete installation.

2. Install the LJ Taglister script: http://userscripts.org/scripts/show/6828
Note: Userscripts.org was down when I tried to get to it. datagoddess was kind enough to send me the script though, so I've stuck it on my website, in case others are as impatient as me.
http://www.vaughnsphotoart.com/uploads/ljtaglister.user.js (If the Userscripts.org link is working, I recommend you get it there instead though.)
When Greasemonkey is installed, clicking on the link to the javascript will prompt you to install the script.

3. Profit! Well, at least enjoy.

Here is how the form looks after you install the tag (screenshot is shrunk a bit... that is not part of the script!):


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