I have managed to get a domain url for a long tail keyword related to my niche. What would be the best thing to do with it? A website with information and link to main site? A blog? What do you, the DP gang, think?
I'd use it to rank for the longtail & any related keywords & drive traffic to my main site. If the link to your main site is dofollow, you'll also get the SEO benefit as well as the traffic.