I believe that there are legitimate members on Muslima.com (I am/was one) but in my opinion the site attempts to con them into upgrading their membership to Gold or Platinum using fake contacts.
I joined muslima.com and the very same day an attractive 28-year old Standard Member Sayra from France sent an interest. I responded with a mail message and then determined that being a Standard member myself, Sayra would not be able to read my email. However, just a few hours later, unexpectedly there was a new message from Sayra and her membership had been upgraded to Platinum. Interesting enough, however, since I am on another online dating site (and despite being quite the catch :D), I am quite aware that things don't move quite that fast! So, I chose to do nothing and one week later I checked and Sayra's profile has been switched off. Another member yasmina from Edmonton, Canada then expressed interest and her profile became hidden shortly after. I received another contact from Aludra from France a Standard member whose membership status has now changed to Platinum (why wouldn't someone just upgrade to Gold, or not already be a Gold member?). Finally, I received another interest message from Valiya from the UK all within the span of 7 days.
The reason for concern is also that three of the profiles were of women more than ten years younger than me, outside my country of interest and didn't seem very discerning in what they are looking for. Common sense suggests that this is not reasonable :(
Hope this helps and good luck to those who continue with the site.
Pros
Good detailed match information
Free to join
Appears to have several members
Cons
Suspecting the legitimacy of the members
Site appears to use deceptive practices to encourage membership upgrade