Just to give some though about URL-rewriting. I think it would be better to to append post title into the url.
from posttopic12345.aspx ----> posttopic-12345-sample-post-title-goes-here.aspx
when rewriting the url to a querying, we can ingore everying after "posttopic-12345-"
after rewriting we might get someting like this Default.aspx?pg=posttopic&id=12345 , we just discard the post title because it does not matter.
this looks better to search eingine than just the number infront the .aspx, which is meaning less. Also it a good idea to have post title in the web page "title". Search engine and Google adsense LOVe that.
Jaben wrote:
v1.9.1 doesn't offer much at this point:
URL Rewriting