Standard practice in aircraft engineering but rare in cars. (evo.co.uk)
We're looking for aircraft engineers, energy consultants and maintenance engineers to fill exclusive vacancies with high profile clients, nationwide. (randstad.co.uk)
Makes sense, my guess would be that B2B social sites are fairly specialized per industry sector so for example aircraft engineers would visit certain forums and blogs and B2B marketers would be on twitter. (socialmediagovernance.com)