No, I disagree: this is the solution to the symptom, not the problem.

The solution to the problem is to minimise the number of repositories by the re-use of as many existing ones as possible. See, for example, the Extras Repository.

Even adding the Maemo repository to get libglade won't resolve the dependency if an author only allows installing from a file: dependencies are only resolved when installing something from a repository.

For an application on the ApplicationCatalog2006 page not to be in the Extras repo smacks of laziness on the part of the author, TBH.

Cheers,

Andrew