Tables and spacers (usually transparent single pixel images
with explicitly specified width and height) are the old way
to create and maintain page layout.
Web pages designed with tables nested within tables, result
in large documents which use more bandwidth than documents
with simpler formatting.
When a table based layout is linearized, for example when
being parsed by a screen reader or a search engine, the
order of content is jumbled and confusing.
Web browsers usually have to download all content within a
table before displaying it on a page, resulting in slower
load times.
Without tables, content on a page can load sequentially,
appearing faster to the end user.
