OpenBlock.com is as reliable as blockchain.info for your bitcoin 'cause you use the same techs, while you can still use it as your litecoin/dogecoin online wallet.
ATTENTION: WE DO NOT SAVE YOUR PASSWORD, so you lost everything if you lost your password unless you backed up your private key.
I will just repeat, what every sane Person on this Forum will tell you.
They state, that you own your private key, but do you really? It is not my fault, that I can't confirm that, since I can't do anything on that site.
Sorry, but my first Impression is, that it just Looks pretty fishy.
Is it intendet, that you can't do anything with IE? If yes, why? Which Browser are supported?
Also your site says Beta: How would you describe your current state of development? (Beta could mean a lot)
You didn't mention, that it is Beta in this Forum. I think, that should be in the Title.