Redirects are dodgy for a bunch of reasons. At one time I ran a site that was directed at an audience of age 13-16. I had a something.to/mysite redirect. Now it is expected, since there is no fee, that there will be pop-up ads in exchange for the redirector. Well one day I got flooded with emails because the redirect hoster wasn't making enough money so they decided to expand their advertising to include ads for hard core porn. So now everyone who visited my site, and as I said the vast majority of them were under 18, got presented with popups for porn sites. That doesn't seem dodgy to you?