The ornamental design for a businesscardholder, as shown and described.
FIG. 1 is a perspective view of a business card holder showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines depict stitching lines that form part of the claimed design.
The irregular fragmentary shading on the bottom rectangular block indicates an organic wood grain pattern that is continuous throughout the surfaces on which it is shown.