You should research any company before you consider joining. Most MLM failure can be tracked back to a poorly run company.
Do a Google search on the company and put the word "scam" after the company name.
Do searches on the company owners and the person trying to recruit you. If the website does not list an owner's name or some sort of contact info, RUN. See what kind of experience these people have.
From there you can make a more informed decision.
If you would like to know more about how to select a company, I suggest downloading the following MP3 file and giving it a listen.