Can you believe it’s already the second half of 2010? Yes? Well, alright.

Today in our weekly social media expedition, we discover Social Media Day. This holiday, apparently backed by Mashable.com, went unobserved in Memphis, but maybe we’ll catch the next one. Honestly, we didn’t even hear about it until a few days ago. Then, MIT has some exciting news about lightning-fast optical internet connections, but have we heard this before?

Facebook actually takes a step forward in privacy, and we discuss why Facebook applications never took off (except, of course, Farmville). Then, we project that Facebook will go after Google’s lunch with a search engine, but Google might be getting even by launching a whole new social network soon. And an iPhone on Verizon? Let’s not get too excited just yet.

Lastly, our local listeners might be interested in this: A Memphis Marketers and Social Media Tweetup! It’s next Thursday (July 8), from 6:30 to 9pm at Dan McGuinness on Spottswood.

And don’t forget about the Social Expedition’s own July Meetup on the 15th, 5:30pm at Davis Kidd’s Bronte Bistro!

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Tags | facebook, Facebook applications, Google, iPhone, Mashable, MIT, optical internet, Social Expedition, Social Media Day, social network, tweetup, Verizon