I can see why people who are new to BTC use the online wallet hosting sites to play around with the system, but why on earth would you leave almost $100k worth of BTC in the hands of some random website? Theese are not safe financial institutions, you have no guarantee that they have any measures in place to keep your money safe. You don't even know who is behind the site. For all we know they might just pack up and disappear with all the deposited BTC once the combined total reaches a certain ammount.

Would you put $100k in a suitcase and give it to a stranger you met on the bus for safekeeping?