This is just a thought, but i think it would be a good idea to have sub domains for each categorie!
It would give you a bigger audience in a search engine, and i would be easyer to find your desired forum!
For example, for the satellite forum it could be:
satellite.digital-forums.com
or for the mobile forum it could be:
mobiles.digital-forums.com
I think it would be easyer for find things when searching through a search engine such as google also, with most web hosts, sub domains are FREE! :thumbs
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