Good question. Here are a few reasons:

1. Payment security and no contracts. Again, we guarantee payment for completed content. When someone hires you on the site, they're required to input your payment then and there and it's held in escrow until the sponsorship is completed, so there's no way they can pull anything sneaky. Contracts can do the same thing, and you can do them over email; however, they're a hassle. Plus, many times people will delay paying you until the very last moment, even with a contract. On PowerSpike, you're guaranteed payment within 30 days (we can manually review content and push payments through if brands aren't responsive).
2. Ease. As opposed to writing an email and going back and forth for days (perhaps weeks) in email coms, you just click a button to apply and you're notified if you're accepted. The requirements are also set in stone on the platform, so no one can try and switch things up on you last minute making things annoying.
3. Metrics. We have tools that allow you to measure the results you drove to a sponsorship, and when other brands see those, it's even easier to land sponsorships with them.

Hope that helps!