Around town: Admittedly I do sometimes, but never when there are kids round or too many people. Depends on the situation, but I do try to be careful and only do it when it's safe.
Country lanes: Gotta love them. Nothing better than a good blast down a country lane. Just keep your eyes peeled and be ready for anything. Personally I like to try n get to know the roads abit first. I know most of the country lanes around here pretty damn well and know how fast you can and can't go. But still, be ready for anything, horses, people other cars... cop vans :- (private joke)
But yea, I used to be fairly bad for it but i've calmed down alot recently and I'm alot more sensible.