We improved our algorithm and updated the site.
Now our system captures more opinions and it is more precise due to the new syntactic-semantic rules which were incorporated in it a week ago.
It seems we have to stress more strongly on machine learning techniques, in order to learn more lexica and syntactic rules.
If you see the mobile phone comparison chart, now the things changed, it seems that Sony Ericsson W980 leads, followed by Motorola Z10 and Nokia N78.