Convert between currencies of different years (to check inflation etc.):
5 USD 2008 in USD 1908

I might be cool if we could make that with Google Co-op. Better if Googlers implement that themselve :)

After doing some research on CPI* and messing around, I present you:
ihaochi.com/files/temp/inflati ...
(there's a small Easter egg – a bit of dark humor actually, don't be offended – try a few times before looking into the source code :))

I am working on the Google Gadget (for Co-op) right now, will post it here when I am done :) My first GGadget so I will test it a bit first.

*Got the data from here: woodrow.mpls.frb.fed.us/resear ...

Haochi : can you handle regular expression with Co-Op? I don't think so.

Oops, been looking at the wrong direction. :(
Anywho, you can add that to iGoogle for now, I will work on the Co-Op later.
google.com/ig/add?moduleurl=ht ...

Haochi:

Thanks! You're great.

If you want ideas for further work, I have some ;) but, really, what you've done is fantastic. :)

And the easter egg... sad, funny and true at the same time!

Neat! To optimize your interface perhaps make sure people know what to enter into the fields. Perhaps use one of those gray pre-filled data. At my first try I entered something like

"How much does $10 in EUR worth in 2005?"
(which got "NaN") instead of
"How much does $10 in 2002 worth in 2005?"

google.com/coop/profile?user=0 ...
The current format of query to trigger the Subscribed Link is "int USD in yyyy = ? USD in yyyy", the regex used in Co-op is [RE:(\d{1,20}) USD in (\d{4}) = \? USD in (\d{4})]

Suggestions welcome.

By the way, I couldn't quite figure out how to parse info from Subscribed Links to the gadget, anyone? :)

Haochi:

Great, again.

> Suggestions welcome.

Extend to other currencies? E.g. [4 USD in 1850 = ? EUR in 2008]