Honestly I don't know, but I did notice that if I close Chrome, they appear to stop. I tried to discern whether it was related to being on the dev pages, and being logged in (or not) but I couldn't quite nail it down. After awhile I gave up - but just thought I'd mention that it seems related to Chrome (Big Brother is watching you). Also, I get a lot of apple.mdworker messages (so annoying!). Apparently they are related to SpotLight (file searcher app). Your mileage may vary.
Topic:
App & System Services
SubTopic:
General
Tags: