Reviews here are signed. On an accepted paper a named academic stands behind the assessment, and that judgement is attached to their own record rather than hidden behind "Reviewer 2". We are selective about who joins, and standing in the pool is earned rather than bought.
Pick as many as you can genuinely review for. An editor reads every application.
We do not pay reviewers and we do not charge authors: publishing in these journals is free
for everyone. Anyone who joins on a colleague's recommendation is never assigned that
colleague's manuscripts — the system refuses it.
Would rather publish than review? See the call for papers.
Signing in just saves you typing your name and address; you can apply without an account at all.