These are my links for January 22nd through January 25th:

• Your Brain Can’t Handle Your Facebook Friends – Intriguingly most people can only really maintain interaction with about 150 people. This is a common theme looking at sizes of 'tribes' but it seems people don't change much, and it equally applies to Facebook. With 700 friends each on Twitter and Facebook, I've recently started to segment people down to 'essential' (regularly check their posts) and 'other' (check if I have time). How are you handling your social networks nowadays?
• Artists of the World Unite! – Great review of Seth Godin, the guy who coined the phrase 'conversational marketing', new book "Linchpin" which is all abou thow people in a business need to change their thinking to fit in with the web 2.0 world. Also some useful ideas about not following social media just to feel like you're not missing out. How true.
• Essential Social Media Tools for the Small Business – Yet another SM guide…this time with some useful links to articles about tools and optimising your presence on Facebook and also Yelp – a new one to me (predominantly US site) which collates reviews and interactiosn around physical presence retail businesses, and is challenging Foursquare by including 'check in' options. Location based digital social marketing, accessed by mobile, will be VERY BIG by the end of 2010.