I think this is going to hurt CampBX much more than it will Dwolla, and it for Bitcoin it is only a matter of wounded pride.  Now the only way to get money to them is by using postal mail via money orders or personal checks.  No wire transfers, no ACH.

I probably should cancel my Dwolla account out of protest, but I also may keep it for my own self interest, just in case Dwolla changes their mind.

My average revenue-generating Dwolla transaction was probably $1,500 - $2,000, so I can see the $0.25 fee not being worth it to them.  And forget about any interest, most of my transactions passed into and out of Dwolla within minutes.