There was a time when seo gurus defined in-content backlinks as most powerful tool on the basis of their experience. Article directories were introduced and writers came on to scene to write bundles of articles each day and posting them on large no of article directories. Some of these article directories proved really good in terms of results but others were just waste of time. Keeping this in mind webmasters became selective in selection of directories and made certain criteria to submit articles only on quality article directories.
This procedure went …