This user has a lot of communities joined today and 1 rep
They seem to be methodically signing up to sites and then offering the 100 rep association bonus as a bounty.
Is this a problem? Should the number of concurrent bounties offered across sites be limited? Personally I doubt that anyone can be such a polymath as to be picking worthy bounty candidates and potentially evaluating answers for such a wide range of sites *
*more than 100 - including topics as diverse as Chinese, Electrical Engineering, Quantitative Finance, SharePoint, Computational Science, Cryptography, Lego, Biblical Hermeneutics, Islam, Homebrewing, Martial Arts.