Some years ago you could easily find a lot of interesting info by googling only and few GUI apps for stream recording. There were more than 15 cam sites which had security holes (exploits) over past decade thanks to which you could record private shows for free, often without any coding/scripting knowledge. Among those the most wanted ones were at that list like LJ, SM, F4F, IML, EL, C4, SC, MFC and bunch of others. You could also download cam girl private videos that were models officially selling via cam site VOD archives (cams, XLC, F4F with over 1,5 million of videos etc...)
Unfortunately, due to flood of people who tried to monetize recorded private shows by posting them into public blogs and forum boards cam site owners have start patching the security holes (exploits). At the end, cam sites made their private streams more secured while people who knew to find exploits have stopped talking/sharing what they know with others and with the kill of adobe "flash" most of the exploits that were still working died as well.
You would be extremely lucky if you find anyone willing to speak about these things today.