Hello,
I'm one of the first developers from Mudah.com.my, and I can assure you that every advertiser has to do an email confirmation prior to their ads being approved. Every single Ad is approved manually by our internal staff, and if users respond to an advertisement through Mudah's online form, then you can be sure that the enquiry will only be sent to the original email being used to place that ad.

Mudah.com.my is a very safe place to sell and buy your items, despite of what you have said.

Sincerely,
Yam Chuan, Wee
Professional Web, Database & Unix Systems Developer

Hi Austin,
I understand clearly what you have just said. When developing Mudah, we can either make it to be:
1) Simple and straightforward, extremely fastloading so that everyone can use it easily without getting confused.
2) Put in all the advance features, make it as complicated and messy as one of the other sites you've mentioned, and have user registration, feedback, etc.

You see, easy, fast and convenient means keeping certain features away so that the majority of users who are not so technically savvy can jump into Mudah without much hassle and confusion.
To keep mudah as safe and as clean as possible, we're manually rejecting all ads that do not meet our terms and guidelines.
And if any advertiser cheats or defrauds a buyer, then we will always work hand in hand with the buyer, and also the police in tracking down the seller.

You raised a good issue regarding a permanent username and reputation status, something which we have thought of and I myself have brought up with the management on a number of occasions.
For the time being, this feature is not available, for the sole reason of keeping everything fast and convenient.

I will bring up this issue again tomorrow with the management and see how we can resolve this specific type of reputation stealing scenario.
Thank you so much for speaking your mind out.
We are always listening.

Thanks,
Yam Chuan, Wee