I love pretty much all aspects of photography and have been getting into street photography more since I got my Ricoh GRD3 but have done it with my 1D as well. My tip? Just do it! I've taken hundreds of street photos in Brighton and in Mumbai and in all that time I have never had anybody make an issue out of it. However one day when doing landscapes on Brighton seafront I had a guy come up to me out of nowhere and angrily demand that I delete a photo which he was in, I had a ultra wide angle on and he was a dot in the distance. I pressed a button and told him it was deleted and he whent on his way. Whatever, I dont hold with the 'sneaky approach'. Just look confident, and snap away, the worst that can happen is that somebody may interact with you! The interesting stuff is, I have to say , often achieved by serendipity so shoot loads and then examine the results critically, you never know what you've got and occasionally the result is amazing, thats the wonder of digital! Of course one comes across some images that just beg to be photographed and yes there are times when you have an image in mind and go out and find it, you see a interesting backdrop and then wait for something to happen in front of it. So, be eclectic! Do whatever it takes, cos it's the result that matters.