Does not recommend this product
Perfect solution if you need a bill-bored!
Unfortunately signs are privately owned and leased to Blip, so your ads have to be approved at multiple levels by different organizations. It makes for a very non-transparent approval process.
After Blip approves your design, the sign owner might reject it just because they don't like it, or don't personally understand it. You might not even get any feedback about it. You can't communicate with the sign owner at all.
If you're a boring, predictable, straightforward company with nothing edgy or interesting going on, this could be a good fit for you.