OK. I thought someone more knowledgable would come along by now... Not having actually used Diabuddies, I'm describing this from what I've read here (and could be way off base):
Diabuddies is a website built "by diabetics, for diabetics", and is the brainchild of one of our very own folks here, BriOnH. You can upload your meter into something called a "diagrid" on the website to see a graph of your data, and you can share it with others, so maybe they can help you spot patterns.
There's probably much, much more at
www.diabudies.com. Hopefully, someone else will come along soon and explain better.
cheers,
j