All any sort of cooldown will do is increase support requests to turn it off.
Nobody needs to gamble (Ignoring the addictive part of it) but when youāve blocked Tesco to stop you buying cigarettes and then you need to eat, thatās a bit different.
RIP Locked Pots! 
My concern here is that Monzo might see block spending as a sign that you are struggling with finances then decline you for other products like a loan.
Iād personally use it to block merchants from taking money out of my account but it might be seen to the bank as negative against the customer. Iād love to know if using this feature has a negative impact on your options.
I blocked TikTok payments so I wouldnāt buy 69p car phone holders. I donāt think thatāll affect my lendability.
Is lendability a word?
Itās more a word than frauded will ever be.
Surely frauded is simply the opposite of defrauded, you know like flammable and inflammable. 
But to stay on topic, theyāre more likely to look at your balance and overall cashflow (which they have access to, after all) than at what vendor you block.
If you consistently have an overdraft, that will count a lot more than blocking yourself from spending on high-end chocolate brands.
I should block Aliexpress
Spending block has been in Labs for just over six months now, so Iād love to hear: have you used it? how did you find it?
I never thought I would use this but after a subscription from Weight Watchers that I didnāt want anymore and their website saying I couldnāt cancel and was locked in for 8months I thought Iād try it. The block worked and weight watchers canāt get my money! LOVE IT!!! 
Iām not sure if youāre trolling again or you want a CCJ. Not sure which is worse.
I havenāt personally used it beyond a test go, but Iām reassured just by it being there. Iād love to see this fully rolled out as part of the core experience. For me I think itās more about protection than curbing my spending.
You still owe them the money if youāre in contractš
Shssss I donāt want to hear that 
Works as expected. Blocked TikTok shop for a bit of friction to stop buying cheap plastic Chinese tat then found a phone holder for a quid that I had to have so unblocked.
I may block AliExpress 
I have a tendency to buy cheap Chinese crap, some good, some bad
I bought a Tronsmart waterproof Bluetooth speaker for Ā£10 thatās awesome, but at the same time I got an mini vacuum ear cleaner that doesnāt seem to do anything
@JonH itās a nice feature, but without a cooling off period it makes it pretty useless. I appreciate thereāre many use cases, but would it be possible to add an extra feature where on request we can also add cooling off (and ideally decide how long for)? thanks!
All that does is increase the inbound for support. Incredibly unlikely to happen.
Locked pots proved this
This is a great point. While developing this feature, we worked with the Financial Capability Lab, a collaboration between the Money and Pensions Service and the Behavioural Insights Team. The suggestion is that the ability to write a reminder to yourself, that we play back when you go to remove a block, can be a powerful source of friction.
Weāll be looking at the data soon to check how effective it is 
I also hope that weāll get time to extend this feature in future. That might mean, for example, more spending controls, not just blocks. Think ādonāt let me order takeaway more than twice a monthā or similar(!). Or in the case of friction, I think a short cooldown ā maybe 10 minutes, just enough time for the urge to pass ā could also be a very effective mechanism to help in moments of impulsivity, without overwhelming our customer support teams 
Also, as others have pointed out, please remember that this block isnāt meant to be used to stop a company taking a payment youāve contractually agreed to 
(We already have some safeguards to stop folk doing this, but itās tricky to catch every case!)