It offers a way of searching a number of sources in one place, but rather than providing all the results side by side, the user must go to each individual website to see the results.
Mae’n cynnig modd i chwilio nifer o ffynonellau mewn un man, ond yn hytrach na darparu’r holl ganlyniadau ochr yn ochr, rhaid mynd i bob gwefan unigol i weld y canlyniad.