Via Frugal Travel Guy, here’s a link for an online offer of 50,000 bonus United miles (presumably after $250 in spending on the card within three months) and first year fee waived for the United Visa.
Outstanding offer, I’ve never seen a better one. This was recently available as a phone-in opportunity, but that was pulled.
This link is likely intended to be targeted to folks who received a specific mailing. But it should still work for anyone. If by some change you don’t automatically receive your bonus, be sure to have printed each page along the way or saved them as .pdf files to show the offer you signed up for. That said, I wouldn’t anticipate that there will be any difficulties.
Most folks are able to get the signup bonus for each specific card only once, so if you’ve had a personal United Visa Signature card in the past you may not be able to get the bonus again. But ‘your mileage may vary’, as they say.