In answer to Len’s question about searching as HTML, I think that when Safari prints a document to PDF, if also encodes the text into the file. I “print” from Safari directly into DEVONThink, and they show up as PDF+Text. So, I can search from there.

I import my scanned receipts into DEVONThink, and will often throw keywords in the comments field to aid searching. For example, if there is a receipt for a big ticket item that would warrant serious tracking (think, there is a new desktop computer on there) then I throw a keyword in the comments field.

When Tiger comes out, I’ll probably evaluate if it’s worth ditching DEVONThink in favor of spotlight for receipt tracking. It might just require a bit of magic to take the comments from DT and implement them as keywords in the PDF. I’ll still use DT, Safari, and PDFs for archiving interesting articles however. It’s “see also” functionality is quite useful.