Back in 2009 on the old copywriting forum, I posted a video on how I use two do it using Amazon. (pretty common technique these days but you can view free here: 2 Minute Copywriting Cure…)
It's the stupid-simple idea that just keeps giving. We used it in the Financial Planning space a year ago to generate 2000 leads.
And just last week I took the hot topic of "Growth Hacking" and mashed it with the Olympics to create this one: 5 Growth Hacking Lessons From Olympics
It took off in the twitter sphere and facebook.
For those of you who aren't doing this - I can't encourage you enough to start.
For those of you who are doing this, What mash-ups have you seen or used recently (that you can share)?