Is this how I start a blog? Is it improper to recruit cherry scouts for the Vancouver Cherry Blossom Festival through a blog?

The Vancouver Cherry Blossom Festival (link is to their website) runs from March 29 or so, for a month, and during that time, one of the festival activities is an ongoing treasure hunt: cherry scouts comb their neighbourhoods for trees in bloom and post their sitings on these forums (Vancouver Cherry Blossom Festival, under Pacific Northwest). The "hook"...