Freebitco.in Now Start mining
Nice idea, bad implementation IMHO.If you start mining in browser, you don't get notification when the timer runs out and the autorefresh to the claim page just does'nt work.
So you will get a few extra satoshis mining, but you lose those free claims - especially if you are like me with ~1000sat/hour minimal claim.
Maybe what will be best is CPU mining pool - you can use more miners, more OS'es, more optimisations to the miner itself.
Just my 2 cents.
For some reason I don't have access to mining yet but is there any reason you can't have 2 tabs open, one mining and one with the timer?
But I still prefer to point my cpu's directly to a pool, cause all of my rigs are cpu-idling, when they can make some satoshis.