According to the latest survey by CeSID the referendum on the new constitution in Serbia might actually succeed--some 57% of voters said they'll surely go to vote for the constitution and another 24 % probably will. The primary motivation for voters appears to be a sense of civic duty (I guess the voters in France and the Netherlands last year are much worse at understanding their civic duties when they voted against the EU constititution). Considering the content of the next Serbian constitution, this is better news than the motivation being enthusiasum for substance. And, only one in ten supporters in the survey do so because of Kosovo.
For a good blog calling for a boycott see http://www.bojkot.info/