Some modification you can find installed on this forum that I did for SMF:

Sticky First Post: makes first post of a sticky topic appear on every page, and inserts a separator between sticky and non-sticky topics and posts. Currently at 1.2, modifies both classis and default themes.

SEO mod, would work for any version of simplemachines forum:

1. download both files (mod.txt and htaccess.txt)
2. upload to your server, in the SMF forum root directory
3. rename htaccess.txt to .htaccess (starts with a dot, yes)
4. login into your account using shell (if your hosting does not provide shell, see below)
5. cd to the forum directory, run the following command:
patch -l -i./mod.txt Sources/QueryString.php
if the patch worked successfully you are all set, refresh your forum now!

if you don't have shell, you will have to open Source/QueryString.php in your text editor and add contents of the mod.txt there by hand.

I won't be able to provide support for this mod, so use at your own risk nada nada.