Trying to be thematic here:

Views on Brown's latest fiscal wheeze are insufficiently good-tempered to be on this site, so are on the other one 

A letter to the FT perfectly summarises my views on the Tobin Tax.

Mr Steinbrück’s proposal does not attempt to address the cause of the current crisis and is simply a destabilising revenue-raising exercise. He argues that the tax would yield a staggering $690bn a year. Yet in the next sentence he claims that this would not unduly burden financial market participants. No industry can pay an additional three quarters of a trillion dollars in tax annually without noticing. This claim of free money with no cost is farcical.

 Robert Peston points out how much it might benefit the BANKS if there was an effective curb on pay. They are in competition with their employees 

The FT has a blog called Money Supply.

Bob Shiller defends Financial Innovation.   To me, some of his ideas look like an excellent way to confuse grannies and orphans.

For once, Munchau is optimistic about something: he liked the G20's focus on imbalances, though has come out with 4 difficult questions to answer. 

But Anthony Painter thinks that they ducked the issues (a bit like Simon Johnson earlier).