Well if you want to try your luck you can mine there.
But I think with a USB miner you should join a good PPS pool like Antpool or F2Pool and point your miner there because by looking at your op I think you want to earn some bitcoins quickly. So that might be the quick way to see some bitcoins o your account although not the quickest way.
Looking at your screenshot everything is all right but you cannot see your bitcoin on your balance to rise up quickly because you are on a multipool.
Trying a PPS might be good also, but each share submitted will be a very very tiny amount, either way you will get a very small amount unless you get lucky on solo.
I think you'll just need to find a pool with low difficulty as you only have around 300MH
Kano.is is not solo it is PPLNS as is eligius, they just have very easy to see reporting tools that update fairly quick.
kano.is you can either create a user and password so you can log in to the site or you can just mine to your address, if you have a user you set your BTC address in your payment settings after logging in. If you plan to mine to your address put your address there, you can also use the _ to differentiate multiple machines but this is your choice. Both kano and eligius do not require a login you can just use them by BTC address.
To see your stats on kano
http://www.kano.is/address.php?a=COPYBTCADDRESSHERE
To see your stats on eligius
http://eligius.st/~wizkid057/newstats/mystats.php
If you want to try solo and test your luck (you will only get paid if your miner finds a block)
http://solo.ckpool.org/
They do have a way to check some stats, but again you will only be paid if your miner finds a block, you will get the full value of the reward + transaction fees, minus 1% in pool fees.