The script is too bad in terms of SEO.
No HTML, No SEO friendly URLS and also; Posted content should not be like for e.g- "www.abcd.com/gag/30" INSTEAD it should be something like : "www.abcd.com/This is my first post"
Seriously, sites running this script are not google friendly at all as far as i know. I may be wrong.
If we can have any mod for these features, it would be great