Not sure if this is really a 'Hot Deal', but I think it's worth posting the fact that O2 have reduced their mobile broadband price from £20 to £15 per month.
This is for an 18 month contract, with 3 Gigs per month and no setup cost or charge for modem. £45 Quidco brings this to £12.50/month overall.
Now this isn't the cheapest deal out there, but with O2's excellent customer service and a 50 day 'trial period' it surely represents good value. The trial period is long enough to really get a feel of how well it works for you as you go about your life.
I also reckon that for a light user with good coverage at home, this *could* replace your 'normal' broadband. It would clearly be no good for iPlayer nuts and download freaks, but if you just do surfing and email then 3 Gigs is probably enough.
It's worth noting that the 24 month contract is also £15/month for exactly the same service. I called O2 about this and they agreed that this was mad. DO NOT sign up for 24 months.........(This might even be a mis-price, which means the deal might not last long. Snap it up today and cancel if you need to would be my advice)