Michael wrote:Is it worth putting $10 on each every three or four months, just to keep them active?
As stated above, your call. Worth is always highly subjective. I didn't see any worth in keeping my Shell card with other cards that offered better rewards, terms and limits but YMMV.
Michael wrote:I was just thinking that none of us know what the credit card future holds . .
While that's true if that's the sole justification then you'll never close any cards (also your call though).