I"ve been back and forth to just about every blog site there is - xanga, lj, blogspot, and many more - and i've found the best to be blogdrive.com:
the communal nature of xanga is there if you want it to be, but it can also be a totally isolated thing. another plus is the ability to easily write your own CSS/HTML, whereas xanga/blogspot/etc have specific style sheets that are very hard to alter or that won't let you edit the actual sheet.
in any case, i don't update as often as i should, but i do like having it there:
one of my more active blogs is piratelunchbox.blogdrive.com if you'd like to look