One of the BEST GP Tip Sheet articles I've read in recent weeks, especially #5 and #6. Both of these have made a huge difference in how well and how fast I get my client's GP listing ranked at the top of the SERP's

not exactly a "must read" article but valid on a few points

Nobody bats a 1,000. True, G-Buzz was a bust. G-Wave was a waste and Orkut never got past 1st base. BUT, my hunch is G+ will not only rival FB, but once the G-Engineers get their Huddles and Circles and Spikes and Hangouts tightened up and especially once they pull the trigger on G+ for Business, you watch see how many SERIOUS marketers bail on FB and move their time and money to G+. I for one could give a good rat's butt on if you're checking into the Gap or drinking a latte. Being able to create live video <10 and controlling when my content gets shared and by whom (that I control) will take SMM to a level real IMers desire.

I agree w/ Anelisa - next steps on How to not be boring would be a good follow on piece.

Ever since Mashable started touting the 4 Square play, I've been keeping a much close eye on its progress. When Peter said on CNN interview the potential market cap for 4S could hit $50-100 million (with only 700k reg users) and that it could rival Twitter, I thought I might try and get a GymRat badge and I don't even like to pump iron anymore.

We all know that a strong SEO local search marketing strategy is vital to any/all small businesses if they want to be able to compete, hence the formula I chant to the SMBs I work with is; SEO local search + .MOBI + 4S + Twitter + FB = a minimum 4 starters.

This is a good read on the topic from Mashable too;
http://mashable.com/2010/04/07/foursquare-cheaters/

I keep reading that Citations are the new Link for local search and that consistency matters quite a bit when populating a new citation. I'd like to see someone compile a List of the Top 10 IYP and the Top Data Directories where a new business listing should list take the time to detail their company profile and the pitfalls for not doing so.

I singed on with Adly and Sponsored Tweets (and) a couple of others for good measure. Adly seems to target the Celebs and Sponsored Tweets is more for those of us with 10,000+ Followers.

I bought a Twitter marketing tool that has had a dramatic impact on my follower count. I don't subscribe to adding a bunch of followers in any ole niche. I'd much rather have those who are in sync with my niche, thinking my Tweets will generate clicks and the Publishers at Sponsored Tweets will come back for more.

Once they see how I use my Social Media Marketing Plus Blog, I suspect this will have a favorable impact as well.