"Notwithstanding the provisions of sections 17 U.S.C. § 106 and 17 U.S.C. § 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include:
- the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
- the nature of the copyrighted work;
- the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
- the effect of the use upon the potential market for or value of the copyrighted work.
I believe that all the mashups on this blog, meet the criteria. They are not created for profit or gain. They are created as educational, artistic, pieces of work. The mashups will have no effect on the potential market or value of the original.
That being said, should a copyright holder have an issue with any particular mashup or mashups. Once a legitimate claim has been presented the mashup or mashups in question will be removed.