Many also expressed concern that it will curtail space and opportunities for political discourse.
They were reacting to Senior Minister of State for Information, Communications and the Arts Balaji Sadasivan, who clarified Internet rules on election advertising in Parliament on Monday.
He commented specifically on blogs, as well as podcasts and videocasts, or vodcasts, which are online audio and video clips that can be downloaded into a multimedia player to be listened to or viewed later.
He said such streaming of 'explicit political content' by political parties or individuals is banned under election advertising rules set in 2001.
Bloggers can discuss politics but have to register their site if they 'persistently propagate, promote or circulate political issues relating to Singapore'.
Once they are required to register, they will have to remove from their site any material deemed by the law to be election advertising during the campaign period.
This period is from the time the writ of election is issued until the close of the last polling station on Polling Day.
The Singapore Democratic Party (SDP), the first political party to use podcasts on its website since last August, said the latest move 'deals a crushing blow to the SDP's strategy'.
'The party will consult IT experts to see what can be done to salvage its plans,' said SDP chief Chee Soon Juan in a statement.
Workers' Party (WP) chairman Sylvia Lim also said the party now has to scrap plans for podcasting to promote the party during the polls.
'It is limiting but we will work within the law. This just shows the PAP does not trust Singaporeans to make informed choices,' she said.
Mr Tan Tarn How of the Institute of Policy Studies said: 'Such rules should not be there in the first place. In a democracy, you want the people and political parties to have access to as many tools as possible for a free flow of information.'
Commentators also noted that the ban on podcasting and videocasting means rally speeches and events cannot be put online and hence will have limited reach.
The Straits Time, Home Section; 5th of April 2006