I only use newegg for all my clients, in the order history I can search by invoice, order, PO, item and item description.
The problem is that some of my clients have similar builts and I can't make heads or tails which is which. Yes I know its my own fault for not keeping better notes on my own, but by using gmail docs note keeping can be done fast and easily.
In gmail click on Documents, then on New and pick Document. In newegg, copy the invoice and paste it in the google docs and write down notes. Google docs also allows you to search for any word inside the doc.
