Fawkesy, the limits are 10 messages and 2 hours of chat per 24 (sliding) hours. There's also the picture view limit but it's rather high, I don't hit it often.
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The best is to answer on people's profile page, then they get a notification that you answered to them, just as you got a notifivation that they commented
maladebeljuca, you may need to go shopping, and also to take new pics of you to put here
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