It looks like you're asking for a blog or forum post based on a very specific search query or exploit pattern:
However, as Java applets became obsolete due to massive security vulnerabilities, these tools fell out of favor. Today, finding a "liveapplet" online is often a sign of a "zombie" server—hardware that has been running unattended for a decade or more. The Problem with Legacy Guestbooks intitle liveapplet inurl lvappl and 1 guestbook phprar new
guestbook.php, guestbook.html) that allow unvalidated input.phprar – not a standard term; could be:
But phprar may actually be php.rar or php rar – so: It looks like you're asking for a blog