Will MAC filtering increase Wifi security?

I've always thought that you should enable MAC filtering to increase Wifi security (in addition to using WPA2).

Now I've found this article (Wireless LAN security hall of shame) that says

MAC filtering takes the most effort to manage with zero ROI (return on investment) in terms of security gain.

So can I safely turn it off and save myself the hassle?

In my opinion the article is correct in advising that MAC filtering is pointless and just wastes time. Feel free to turn it off and save yourself the hassle.

Certainly MAC filtering won't slow down anyone with a little cracking knowledge. But it all depends on the number of potential allowed clients, if it's very low (5-10) then why not enable it, it doesn't take long to implement and could stop casual abuse by low-skilled people. If it's a lot of clients then it's probably more of a pain than a help though.