Mods: I put this in Tech because Amazon is a tech company, if this is the wrong group I apologize.

For the last several purchases I have made through Amazon, not only has the advertised "expected delivery date" been wrong, Amazon hasn't even shipped the product by the delivery date. The day I expect an order to arrive, I get a notice from Amazon saying it's "running late" and the new expected delivery date is anywhere from 4 to 10 days away.

This is on top of the fact that I have Amazon Prime. Prime eligible meant "it would be delivered within two days" for the better part of a decade. They slowly transitioned away from that to "two days delivery after it ships," and now it seems like half of everything takes 5-8 days to deliver, even with Prime.

Anyway, the reason I reported them to the FTC because I believe they are advertising misleading or downright incorrect delivery times in hopes of winning your business over a competitor who is honest about their delivery times. If I want a monitor and Best Buy has it for $200 with 3-5 day shipping, and Amazon advertises it being delivered on day 3, I'm probably going to go with Amazon if I'm in urgent need of a monitor. But then the third day rolls around and Amazon indicates "oh, well, it's probably going to be 3-4 more days." If I had known that, I would have just gone with Best Buy, where I know it would have at least been delivered in 5 days; now I'm stuck waiting a week for Amazon.

I don't even know if this is something the FTC cares about. But it should. I encourage everyone to report this if they've encountered the same issue.

• ‘Taking a leaf out of Trumpism’: Yumi Stynes on the ‘misguided’ backlash to sex book

The book has been criticised by campaigners including Rachael Wong, the chief executive of Women’s Forum Australia, an organisation critical of pro-trans activism. Speaking to 2GB’s Ben Fordham on Tuesday, Wong called it a “graphic sex guide for children”, adding that she felt “physically ill at the thought of children reading it”. Other conservative media figures have amplified the criticism.

“This book was a response to genuine questions asked by adolescents to [magazine column] ‘Dolly Doctor’ for more than 20 years. [Dr Melissa Kang, one of the co-writers], was exposed to what kids were too ashamed to ask anyone else.”

• Big W has withdrawn Welcome to Sex from its stores to protect staff – but teen sex education can keep young people safe

Critics have taken particular issue with small sections of the book that address inclusive sexual practices beyond penetrative sex, including “fingering”, “oral sex”, “scissoring”, and “anal sex”.

They are also critical of the inclusion of what they term “gender ideology”. Others are accusing the authors of “grooming” children – a term that is increasingly misused.

• 'I make no apologies': Yumi Stynes responds to Welcome to Sex critics

The backlash has been so intense Big W stopped selling the book in-store after staff members were abused, although the retailer has defended it and it remains available online.

"I've seen people saying to me 'I want to kill you' or 'You should die'," Stynes told SBS News.