Will an online degree be taken seriously if I decide to apply for an advanced degree at a traditional university?

There is still some bias against online university degrees from traditional universities (mainly due to a feeling by traditional universities that online universities are "cutting in on their territory.") Some online degrees will not transfer to universities at which you may wish to pursue a graduate degree.

In theory, if you have a degree from an accredited online university (see above), it should be accepted as legitimate by any traditional university or college. In practice, however, even if a traditional college accepts your online degree as legitimate when you apply for post-graduate study, there may still be some bias against you. Traditional universities tend to favor applicants with traditional four-year college degrees over those with online degrees when making decisions about who to accept for advanced degree programs.

Your chances for acceptance in an advanced degree program at a traditional college may depend on the type of online degree you received and what other qualifications you can provide. For example, if you have a Bachelors in Marketing from an accredited online university and also have several years of employment with a marketing agency, you may have a better chance of getting into an MBA program at a traditional university than you would with the online degree alone.