Great concept. However:

http://www.giftmasters.com/gift-finder should be the homepage of your site.

And a cursory glance suggests that you need to improve your data, which undermines the whole "handpicked" notion:

All of the headphones you suggest on the first page of results for running would be terrible for running.

Most of the water bottles you suggest for running would be impractical (e.g. the glass one)

Keep at it!