Just saw this thread and thought I'd throw my pennies worth in as I subscribe to IC. To be honest I find their share tips to be the least interesting / useful part of the magazine. A while a go I looked at various strategies to add some market timing strength to the fundamental work they obviously do, but I couldn't get anything to work consistently. Equally irritating is that the prices they give, and therefore run their P&Ls from, are completely unrealistic in terms of the price you'd be able to get even if you traded on the open on day of publication.
So why do I subscribe? Basically because they do a lot of buyer's guide type articles which saves me the effort of trawling around to find the cheapest broker, best forex a/c's, best spreads, etc. On savings made from these I've easily paid for my subscription, and every now and again there's something else interesting in the magazine.