YO. For the tag system, I actually have the answer to that because I was complaining about the same thing. But for looking up just other peoples posts you can uuuuse...

http://dramadramaduck.dreamwidth.org/?poster=username

So then the tag system becomes for keeping track of all threads, whereas if you just want posts (which I use a lot) you can use that URL.

Thanks for the support on everything else!