I always thought that the way journals elect their reviewers is that probably they or their editors ask some famous researchers to review some of their papers. I mean, reviewers are probably asked to review papers.
Recently, I have seen some journals and publishers which advertise on their websites saying something like
If you want to be a reviewer for our journal/conference, please send your CV to our email address; we will assess your background and if you are accepted, we will inform you where to start reviewing our papers.
This is very good opportunity for students who are not very famous in their field and want to start reviewing for journals and conferences to send their CV and assess their opportunity to review for a journal or conference; but I want to know if somebody does reviewing for these journals which have such system for attracting reviewers, and mentioning involving in such volunteer paper reviewing in his CV; will this harm his academic reputation?
Is it acceptable for academic community that somebody send his CV for a journal and ask them to accept him as a reviewer? How such advertisement on a journals website is considered? Do reputable journals and publishers have similar advertisements for attracting reviewers to their publication group and can such advertisements be considered a sign of a non-reputable journal/conference?