A colleague showed me how Goggles captures info from a business card. Is there any way I can fill contact info the same way from an email signature?
Sounds like you're looking for WriteThat.name:
It's a service that scans your incoming emails and adds their signature info to your Google Contacts address book automatically. (& supposedly also updates them over time). I haven't tried it, but have recently heard at least 5 people give it good reviews.
It's Google-centric, but since you're talking about Goggles, I assume that might be of interest to you.
Using only a PC, there is a Firefox extension called CleverContacts that claims to be able to parse any section of relevant text and convert it into a Gmail contact.
I haven't tried it, but it sounds like you should be able to just highlight the signature then click the clever contact button and it'll attempt to read the relevant info and after giving you a preview, put it into a Google Contacts
I'm just started trying Copy2Contact ... need to cut&paste the signature block into a second textbox (setup as a gadget in gmail).
Seems to work ok but still early days using it (by me)...
Options available for other systems (outlook, salesforce... etc)