TITLE: Criteria for accepting an invitation to become an editor of a scientific journal
QUESTION [15 upvotes]: Yesterday I receivied the following letter:

Dear Tomaz Pisanski,
I am writing to introduce the XXXX to you. XXXX is a new journal launched by the YYYY from USA. With an open access publication model of this journal, all interested readers around the world can freely access articles online at http:ZZZ without subscription.
  We are soliciting scholars to form the editorial board. If you are interested, please send your resume along with your areas of interest to WWWW. Manuscripts should be submitted to the journal online at: http:UUU. Once accepted for publication, your manuscripts will undergo language copyediting, typesetting, and reference validation in order to provide the highest publication quality possible.
Please do not hesitate to contact me if you have any questions about the journal.
Editorial Office
YYYY

I removed the actual journal title and other details since they are not important for this
question. I would like to have some general criteria or guidelines that would help me decide 
whether to accept such an offer or not.

REPLY [2 votes]: Sorry for answering my own question, but the e-mail I received today may explain that
one really has to think twice before making the decision.

Dear Tomaz Pisanski,
I am writing to introduce the Applied Mathematics (AM) to you. AM is a new journal launched by the Scientific Research Publishing from USA. With an open access publication model of this journal, all interested readers around the world can freely access articles online at http://www.scirp.org/journal/am without subscription.
We are soliciting scholars to form the editorial board. If you are interested, please send your resume along with your areas of interest to am@scirp.org. Manuscripts should be submitted to the journal online at: http://www.papersubmission.scirp.org/login.jsp. Once accepted for publication, your manuscripts will undergo language copyediting, typesetting, and reference validation in order to provide the highest publication quality possible.
  Please do not hesitate to contact me if you have any questions about the journal.
Editorial Office
  Applied Mathematics
  Scientific Research Publishing, USA
  Email: am@scirp.org
This message was sent to [tomaz.pisanski@fmf.uni-lj.si].
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