UpDown.bt, UpDownBot.bz and Secondstrade.com are offering almost the same thing...
I will be interested to see the progress of this thread... especially the public feedback

Updownbot.bz is scam and does not exist anymore. Updown.bt : there are many scam accusations against it.
Secondstrade.com offers better rate and a lot more instruments.
http://btccrzy.com/you finally opened your site. congratulation !! great !!
and thank you for your good comment.
but I want to ask you to fix several point.
below is comment about secondstrade.com on your site.
Trust: 4.5 5
Time options: 1 to 720 minutes.
For details click how to play on site.
Add 10 satoshis for 10 minutes, 60 satoshis for 1 hour etc.
Over 720 and 0 considered as 1 minute.
Payout : 1.9x (on promo), 1.75x (after running promo)
==> 1.85x(13 assets) , 1.75x(only BTC/USD, LTC/USD, LTC/BTC) Min. bet 0.0005 BTC Max bet: 0.2 BTC
==> 0.5 BTCInstruments: BTC/USD, LTC/USD, EUR/USD, GOLD, GBP/USD, USD/JPY, OIL, S&P 500, USD/CHF, SILVER, AUD/USD, USD/CAD, NASDAQ, EURO 50, CHINA A50, NIKKEI 225
==> delete CHINA A50, and add LTC/BTC Transactions appear as soon as they appear in blockchain.
Chat available.
thank you.