Searching for blogs/forums

[vancouv]

If I want to search for all the blogs and forums on a particular subject, what is the best way of doing this?

For example, if I was looking for something like PPRuNe but about vegetable growing in Outer Mongolia how could I easily find out if there is such a thing? If I just use Google is that going to find all blogs/forums?

This might seem a very stupid question but I often look at websites that have links to blogs or forums that I haven't come across even though I've been actively looking for things on the same subject - how do they find them?

[BOAC]

Give it a go (http://lmgtfy.com/?q=vegetable+growing+in+Outer+Mongolia+%2B+blogs%2BPPrune) (thanks to Cesco for the pointer!). Mind you, I don't expect much in the way of relevant hits there.....:)

[Ancient Observer]

sometimes "dogpile" brings up results that google misses.