This Flyertalk thread has dug up a way to make the 50,000 United MileagePlus offer for the Business card offer available to everyone.
I just applied using this method (Step 1-3 are taken from Flyertalk!).
1. Login to united.com and then see if the 50k offer appears
2. The offer never appeared for 50k, so instead I clicked on Apply Now for the 30k Business Explorer offer.
3. Once that application loaded and showed my pre-populated name, etc., I erase the URL, and replace it with this one
4. I went back to united.com and went all the way to the Club card offer. Suddenly the annual fee was waived and when I clicked back to the United Explorer business card he 50,000 offer appeared.
5. I took screen shots and applied right away.
The card is very much the same as the personal card (which has just gotten rid of the foreign exchange fees finally). This is a good opportunity if you be eleigible for a business card offer.
Earn bonus award miles
50,000 bonus miles after you spend $2,000 in the first 3 months of your account opening.
10,000 bonus miles every calendar year you spend at least $25,000 on your Card.
Check your first bag for free
Save up to $100 per roundtrip. Primary cardmembers and one companion on the same reservation can each check their first bag free on United-operated flights when purchasing tickets with their Explorer Card.
No foreign transaction fees†
Purchases made with your Explorer Card outside the U.S. will not be subject to foreign transaction fees.
Enjoy priority boarding privileges
Primary cardmembers and their companions on the same reservation will board United-operated flights after Premier members and prior to general boarding.
Visit the United Club with two one-time-use passes every year
Take some time to relax before your flight with two one-time-use passes each year to the United Club. Enjoy complimentary beverages, snacks, and amenities like private meeting rooms and workspaces, free Wi-Fi and more.
Earn double miles on United ticket purchases and in select business categories
Earn 2 miles for each $1 spent on tickets purchased from United and 2 miles for each $1 spent at restaurants, gas stations, and office supply stores. Earn 1 mile per $1 on all other purchases.
Your miles don't expire
Your miles don't expire as long as you are a Cardmember, with no limit to the number of miles you can earn.
Use miles for any seat, any time, on any United flight
Primary cardmembers can use their miles to book any available seat, any time on any United-operated flight when they redeem miles at the MileagePlus Standard Award level. No limitations, no restrictions and no blackout dates on available seats if you provide your MileagePlus number before starting the award booking process.
Receive room upgrades and special amenities
Enjoy room upgrades, complimentary daily breakfast for two, early check-in, late checkout and other amenities at more than 700 luxury hotels and resorts worldwide.
Get access to exclusive events
Purchase tickets to once-in-a-lifetime events from Inside Access from Chase.
Enjoy the assurances of better protection
Spend and travel without worry with exceptional purchase and travel protection benefits, including purchase protection and primary auto rental coverage.