[a_bonobo]

Bioinformatics has biostars :) https://www.biostars.org/

The difference to linkedin is that biostars has 'in-domain experts' only; the postdocs, the staff bioinformaticians, etc. those are not the people who will hire you. The people who will hire you are on linkedin.

[kfarr]

Yeah it's definitely a combination of posting for peers but also creating material that is helpful for finding the next gig