I'm aware registering a keyword targeted domain may contribute towards ranking for those keywords (aka google sniping). But do you think this strategy would work better than using an aged domain? I have a 3 year old slice of life generalist blog, with over 1000 posts and natural ranks for several long-tail keywords. In the past months I've been using posts as landing pages, with moderate success. Currently I'm thinking about setting up future campaigns entirely outside the blog's loop, because that would allow me to keep the landing page 100% focused on the campaign while cutting off outbound links. Plus I could easily start collecting separate e-mail lists. Also, by following this approach, I suppose that even if the campaigns aren't too successful, I'd still get some positive results from collecting links to my blog and make it grow further. Plus I have a feeling I might achieve higher SERP rankings more easily as my blog grows in authority. Does this sound like a totally good plan, or should I just stick to setting up new domains? Would I be better off splitting efforts and using both methods?
If I were you I would probably use your generic blog to test niches, so you put up a page or two per niche on your general blog, see how the hits are, conversions, if good, then go out and buy a more targetted domain. That way you're only buying a domain on niches that perform well versus buying one for just anything you test.