I think that 0.275 block is someone trying to accummulate at lower levels to try and cap the stock to make it run harder. Its good to have these big buyers sometimes but in my view, its pointless today given it would have clocked past 0.30c today.
Just be patient, this one will go to 0.40c soon - I discovered it last week at around 0.21c and am still holding a small parcel.
Cheers
D