Given the huge number of niche conferences and journals out there, is the filtering that takes place actually useful? I'm not convinced of it. I've engaged in venue shopping myself. Meanwhile useful, novel work is published in the open every day and my brain hasn't collapsed from the inrush of poorly filtered information. I run across junk, but I find published junk too. At least the former usually has the decency to not waste my time with a bunch of academic boilerplate language and a page of barely relevant citations.