Mr Crouchley said the seminar wasn't a parenting seminar but about helping parents keep an eye on their children's online activity, without spying.
"It's just turning into a huge issue around the world, kids are keeping it a secret from their parents.
"There are a few different types of bullying, some minor and some not-so-minor. All of it is quite damaging in different ways.
"People just need to know what their kids are doing online. It's a fine line between spying and just watching without making embarrassing comments on their page. It's a mutual respect thing."
He said it was common for people to bully others through Twitter to get more followers. Another common form of cyberbullying included anonymous Facebook pages revealing secrets about others, which he said was aimed at spreading information and winding people up.
"The more people can stay away from them [the more] they'll lose their popularity."
Mr Crouchley said cyberbullying was an issue people needed to talk about to help stop it.
Details on how to sign up for the seminar can be found at www.socialmediaseminars.co.nz.
To share a story about bullying, email kristin.macfarlane@dailypost.co.nz or contact her on (07) 348 6199, ext: 57072.
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Amanda Todd was a Canadian teenager who was the victim of cyberbullying, mainly through Facebook. She told her story in this video uploaded to YouTube on September 7.
Amanda took her own life on October 10.
A New Zealand teenager who carried on attacking Ms Todd after her death is being investigated, for putting risqué pictures of her on a Facebook memorial page.
The Online Police Child Exploitation team received more than 20 complaints from New Zealand and overseas.
Police removed the images and shut down his Facebook page.