Thanks for the replies so far.
Currently i have 2x gmail email accounts a youtube account which forces a google+ and i also use google search - with google's ever expanding empire web, social network, mobile, tv its starting to leaves me somewhat uneasy with the amount of data they are mining - It reminds me of a quote from that movie Wall Street where one banker asks another banker how much is enough? to which the banker being asked the question replies 'more'
If I use my brother in laws MAC and use google I always make sure that I look for loads of dating sites before I leave..... That way his boyfriends thinks he's gone straight when he sees the targeted advertising!!