Full year guidance does have an impact on the half-year results....

Full year guidance does have an impact on the half-year results. People make assumptions about what you should do within 6 months.

This is the reason I'm suspect of companies that release on the last reporting day. I have not cherrypicked, they are all companies who have been the last to announce:

Cyclopharm - loss recorded
Kip Mcgrath - $7k profit
MUI - npat down 17.14%
GID - loss recorded
BMN - loss recorded
Icash - loss recorded
VTX - loss recorded
Luminus systems - loss recorded
Antinogen - loss recorded
Jaguar Minerals Ltd - loss recorded
Jumbuck - loss recorded
L2 Energy - loss recorded