Wells Fargo is the latest bank to launch a Twitter feed, where customers can ask questions and seek advice.
The Ask_WellsFargo feed, launched yesterday and manned by "Joel", says the bank is "testing this Twitter channel to learn how to best service our customers".
To begin with the feed will only cover "basic banking needs" and Wells reminds customers not to disclose account information on Twitter.
Wells Fargo set up a Twitter channel nearly two years ago but posted only four tweets before moving to the new feed.
In contrast, Wachovia, which was acquired by Wells in December, has been using the site to communicate with customers since last August and now has over 2400 followers.
In January Bank of America launched a feed to provide advice and help to customers and now has over 1500 followers.