Maryland's #1 Special Event Firm & Online Entertainment Guide. Online Entertainment Guide reaches 42,000+ emails, 13,000+ Facebook contacts, and 1,000+ Twitter Followers, all young Maryland professionals. HeidnSeek Entertainment services include: - Advertising on HeidnSeek's Newsletter - Commercial Event Planning & Marketing - Private Event Planning - Preferred Venue Placement in HeidnSeek's newsletter - PR Campaign Planning - Social Media Management - Exhibiting at HeidnSeek events