I hope blocking function will available at future in home edition product!
It may be protected my Pc from virus during online!!!
well, i don’t think they will include it in the Home edition 
If they do, there is no real reason otherwise (except tasks, shedules) to buy PRO edition.
There are good free script blocking tools ready for download :
http://www.analogx.com/contents/download/system/sdefend.htm
A good firewall, can keep you safe from most dangers also.
Waldo