Dead links are the result of the owner of the pic deleting it in photobucket (or deleting their account). As long as you leave them up there you shouldn't have any issues.
I've got pics running around the interwebs that are years old.
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera