All LJ blogs have RSS feeds.

What about if you want to read the blog from say a php script, but you want to go further back in the past? I want to do that for example so I can display all my public posts that are tagged with "frontpage" on the front page of my site. Same with a couple other tags, while still having the rest of my journal entries hosted together on livejournal. I could cross post via some client, or setup a community for each of the separate tags, and then just parse the rss feeds for those communities, but that seems odd to me. I'd be happy with a method to access an rss feed for a specific tag or combination of tags, but the more I look the more it seems like the tag browser page of my journal is simply not exposed in the public api's because tags were implemented later.

Any thoughts? I may end up having to give up on avoiding explicit, static cross-posting, and have what I want to do with tags be a personal site, downloading all my journal entries, and comments, and use some cross-posting client to put those entries I want in my friends' feed back on livejournal.

http://fbartho.livejournal.com/data/rss?tag=tagname / ?tag=tag1,tag2 ?