Yet Another Related Posts Plugin on activation adds a ton of entries to the wp_options table when only two are really needed, a yarpp_version and yarpp_options where yarpp_options is an array of options. I'd submit a patch but after looking though the code it looks like it could be a bit more work than I have time for (I have my own plugins to support, maintain, and improve).
http://wordpress.org/extend/plugins/yet-another-related-posts-plugin/
@mtekk thanks a lot. Yes, I definitely should do this, but am always afraid to touch things... "if it ain't broke, don't fix it." Not to mention making sure the migration of settings works right.
I just made a ticket for it, though, so I can make sure it happens. If you do take a stab at it and make a patch, I'd appreciate it! :)
http://plugins.trac.wordpress.org/ticket/1141
If I get a chance I'll be sure to submit a patch to that ticket.
Ok, I've submitted two patches to implement this. There are cleaner ways to do it, but it would require a substantial amount of time and coding to do (I'm talking a rewrite here).
Thanks! I just commented on your patches.