Field length and type for UTM fields

[Anonymous]

I'm setting up UTM fields to capture Adwords (and other) tracking data.

Step one is to set up the fields in SFDC. But there's no specificaiton as to what kind of field or the length. Any hints? What's the max number of characters one is likely to encounter in any of these?

I'm setting up all five:

utm_source

utm_medium

utm_term

utm_campaign

utm_content

P.S. Still a little miffed this isn't all already set up. Why does Marketo make us do this manually, since it seems like something that most marketers would want.

[Josh_Hill13]

Make these string fields of 255 that are on both record types and converted.

Marketo will pick those up as strings.