Here are our top five articles of the past week.

1) Clicks is selling pregnancy tests that give false positives – with tap water

In testing by Business Insider South Africa, the Clicks digital pregnancy test consistently gave the result "Pregnant" when exposed to ordinary tap water. We were first alerted to the malfunctioning tests by a woman who shared her emotional devastation at learning she was not, in fact, pregnant, and also provided a photo of her test reading positive.

2) Black Friday to be 'bigger than ever' in South Africa, retailers promise

Black Friday is a popular US shopping day where retailers offer massive discounts. It used to mark the start of the Christmas shopping season, after the US Thanksgiving holiday. The phenomenon has recently gained momentum in South Africa, with several stores reporting stampedes as shoppers fight each other for marked-down products.

3) Tito Mboweni’s recent adventures in business – from failing to get loans to eating 'grass' at Discovery

Over the past nine years, new finance minister Tito Mboweni has been involved in various SA business ventures, boots and all. His own entrepreneurship, though, has been stymied by a lack of funding – which has apparently helped shape his view of banking in SA.

4) This is what Fikile Mbalula's R3,000 vitamin drip is supposed to do - but scientists urge caution

A vitamin intravenous (IV) drip worth R2,999 was administered to former police minister and ANC head of elections Fikile Mbalula on Thursday afternoon. The Royal Flush treatment from REVIV Southern Africa promises to boost a patient’s immune system, relieve pain and increase energy. But there may be no proof that the drips are beneficial if you don't have a medical deficiency.

5) South African passports are down – again – in global rankings, no thanks to China and India

The South African passport dropped another two rungs in an update to the authoritative Henley Passport Index published on Tuesday, continuing a long slide in the global rankings since 2008. The ranking, by global citizenship advisory group Henley & Partners, measures the power of passports by the number of countries the holder can access either visa-free, or with a visa obtainable on arrival.