Just based on the number of people I've seen post here about bicycles (and bicycle accessories) being stolen from that rack, I'd say that's probably sound advice.

Still, it's tempting to use those racks because a) space is always plentiful on them, b) they're easy to lock to, and c) they're right next to the train. Rather than just having Somervillians avoid the racks, I'd LOVE to see the city and the MBTA do something to make the racks a safe place for people to put their bicycles. Perhaps by adding a single conspicuously placed closed-circuit video camera or something?