I thought this was interesting because it combines using a hashtag and social media with giving and getting referrals in a new way. HashTip stores and organizes the tips you receive from friends and people you trust. How many times have you received a referral or "tip" from a friend and later forgotten it? Now you can simply write yourself a note on Facebook or Twitter and simply tag it with #tip. It will automatically be stored and organized for you - not to mention you may be helping out anyone who sees your post. You can also receive tips from friends you are connected with when they post using #tip.With so much going on in the world of social media right now, it's hard to say if this will take off, but it's definitely a great way to harness word of mouth marketing. Would you use it?