GREEN - the one where your customers hang out most, and makes most sense to your marketing strategy. Green = Go! This is the site you should start with. Commit some time to updating it regularly, and read around how other businesses are using this channel for marketing. AMBER - these are the social media tools that could add value to your marketing, but should be considered as your business progresses and you find you have some extra time to commit. RED - Avoid these at start-up stage. These may be sites you could justify to yourself using as marketing tools, but they are not an immediate priority. Ditch them for now and put them in your business plan under 'growth strategy'.