Medical.watch is an excellent tool to stay up-to-date regarding key opinion leaders on social media. Kate Sears is also amazing!

Provides a user-friendly way to quickly see what the hot topics are in your therapeutic area(s) of interest, access educational resources, capture digital insights, and identify digital opinion leaders and their networks.

It is quite easy to register and confirm the e-mail. However, if you use the e-mail which is not from the organization, but your personal e-mail which you still use for work purposes, it does not accept the registration. The design and layout are quite easy to navigate, easy to implement.