We've all been there. We click a Twitter hashtag of interest, and are stuck siphoning through spam. That, or a company creates a hashtag that totally backfires. Which begs the question: When is it okay to hijack a hashtag? Before you say never, check this "hijack" out for the #HotDogDay (used heavily on July 23rd for National Hot Dog Day): Two thumbs up for this great way … [Read more...]