I need someone to build links in tech-related forums.

I'm looking for someone who has an account (not a newly registered one) in at least one of the following smartphone-related high authority forums (check the attached file for the list). I hope you can help me build links for our software programs in one of the forums.

Of course, if you have other forum resources related to my niches (iPhone/Android/Windows/Mac), please also feel free to get in touch with me.