Nested tables

I'm not sure if I'm posting to the right list or not...

I need some opinions on nested tables.
Do you use them??
Do you have any problems? I 'thought' I had heard using them
was not 'proper' coding [I may have heard this wrong], although it seems 
they are used quite frequently.
What do you find to be the case and is there a limit to how many tables can 
be nested.
Do they help things in place better?
I usually use one or two tables, but use the columns to hold the images or 
text and have had no troubles until recently.
I had to edit a page with tons of nested tables and also many small two row 
one column tables stacked to make a side border...
You can email me off list, but I was just wondering what experience others 
have had with this.
Thanks all!!!

Cassie

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