should I use postgresql arrays...

Hi folks,

Using Postgresql array feature  can siplify
lot of coding in my application layer as well as
database design , for example for storing checkbox
selections in a web page i need not have a
secondary table referencing the master one.

should i be using arrays for that?

My only concern is the SQL compliance , are arrays
part of  standard 2/3 standards?

what if at a later date i decide to migrate my database
to another engine.