[Do this by clicking the 'Like' button.]
2. Open comments under the "Glaxo "Builds Bonnie Babies" advertising hoarding opposite Kings Cross Station, London in 1921, UK" thread.
3. Ask them a question about one of their products.
4. Sit back and watch consumer queries get deleted. Here's some snapshots.
Just one more for good measure... this has not appeared on GSK's Facebook page...yet.