Tell us more about this forum, what makes it stand out among other technology forums, why is it special? When you think about this, a good forum name may come into your mind
If you intend to buy name for technology forum: then such domain must include technology and forum or in adition with prefix or surfix e.g mytechforum.com, techforum.com or forumtech.com make sure you buy domain with .com extension you can also think of what aspect of technology, is it computer, or education aspect of tech? that is how you could arrive at what domain should be more suitable. Just make sure you are able to brand the forum. Cheers
A nice short brandable .com domain is what I would go for, IF you can find one for a reasonable price.
What kind of technology forum is it? Is it related to computers, cell phones, computer software, design and development, technology news or any other area?