I get probably one approach about a job a week from headhunters (had one yesterday directly via LinkedIn), and 2-3 new 'connection requests'. We have a whole department in our firm that basically spends all day scouring it for potential candidates for jobs and then contacting them (cheaper than...
Definitely maintain an up to date profile on there as recruitment consultants, headhunters and large in-house resourcing teams use it all the time to find potential candidates (it’s cheap, easily searchable and instant). You’ll be contacted through it if they’re interested in your background...